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Selenium can't find iframe after postback inside the iframe after finding one element inside the frame

I am trying to create a test where I have to fill out some information inside an iframe. Getting access to the iframe work fine and I can fill out information inside the frame. The issue is that when I find out a element 'A' it has a postback attached to it which reloads the content inside the iframe, to find out another element 'B'. So i am not able to find that element.I am getting below error:
org.openqa.selenium.WebDriverException: unknown error: Element <iframe style="overflow-x:hidden;" id="t5" height="1350" frameborder="0" width="98%" src="https://edata.ndtv.com/coronavirus/table/india_table.html?shgraph=1&days=7" cd_frame_id_="7da8f2aea5a580b3a6e90a9d5016fa0d">...</iframe> is not clickable at point (554, 7). Other element would receive the click: <div class="topnav2014" style="border-bottom: none;">...</div>
(Session info: chrome=85.0.4183.83)
Here are my observations: When I first locate the iframe it looks like this:
<iframe style="overflow-x:hidden;" id="t5" height="1350" frameborder="0" width="98%" src="https://edata.ndtv.com/coronavirus/table/india_table.html?shgraph=1&days=7">
After the postback has occurred it looks like this:
<iframe style="overflow-x:hidden;" id="t5" height="1350" frameborder="0" width="98%" src="https://edata.ndtv.com/coronavirus/table/india_table.html?shgraph=1&days=7" cd_frame_id_="a5006acf28d8c288313681ab9ad7a4fa">
I can easily find element A:
But element B i am not able to find
The code fails when I try to get hold of the iframe element.
How can I get hold of the iframe again, after the postback inside the frame?
I have tried this suggestion also but it is not working
//Ensure that you are back to the base frame
driver.SwitchTo().DefaultContent();
//SwitchTo the intended frame
driver.SwitchTo().Frame(driver.FindElement(By.XPath("//iframe[contains(#src,'<removed for clearity>')]")));

Use a driver.executescript() for the first problem since another element is receiving the click.
element = driver.findElement(By.id(""));
JavascriptExecutor js = (JavascriptExecutor) driver;
js.executeScript("arguments[0].click();", element);

This error message...
org.openqa.selenium.WebDriverException: unknown error: Element <iframe style="overflow-x:hidden;" id="t5" height="1350" frameborder="0" width="98%" src="https://edata.ndtv.com/coronavirus/table/india_table.html?shgraph=1&days=7" cd_frame_id_="7da8f2aea5a580b3a6e90a9d5016fa0d">...</iframe> is not clickable at point (554, 7). Other element would receive the click: <div class="topnav2014" style="border-bottom: none;">...</div>
(Session info: chrome=85.0.4183.83)
...implies that the WebDriverException was raised as you tried to invoke click() on the <iframe> element.
Factually, instead of clicking on the <iframe> element you would invoke click() on an element within the <iframe>. Moreover, as the the desired element is within a <iframe> so you have to:
Induce WebDriverWait for the desired frameToBeAvailableAndSwitchToIt.
Induce WebDriverWait for the desired elementToBeClickable.
You can use either of the following Locator Strategies:
Using xpath:
new WebDriverWait(driver, 10).until(ExpectedConditions.frameToBeAvailableAndSwitchToIt(By.xpath("//iframe_xpath")));
new WebDriverWait(driver, 10).until(ExpectedConditions.elementToBeClickable(By.xpath("element_xpath"))).click();
References
You can find a couple of relevant discussions in:
Ways to deal with #document under iframe
Is it possible to switch to an element in a frame without using driver.switchTo().frame(“frameName”) in Selenium Webdriver Java?

I am able to extract the data of the active cases rise and fall for every state. There is a single frame which contains both the locators shared by you. Check below working code.
driver.get("https://www.ndtv.com/coronavirus");
driver.manage().window().maximize();
WebDriverWait wait = new WebDriverWait(driver, 20);
wait.until(ExpectedConditions.elementToBeClickable(By.className("tab-wrapper")));
driver.switchTo().frame(driver.findElement(By.xpath("//iframe[contains(#src,'https://edata.ndtv.com/coronavirus/table/india_table.html?shgraph=1')]")));
//cases down
List<WebElement> eleCasesUp = driver.findElements(By.xpath("//tr//td[3]//p//span[#class='data-up']"));
List<String> casesUpList = new ArrayList<String>();
for (WebElement element : eleCasesUp) {
casesUpList.add(element.getText());
}
//cases up
List<WebElement> eleCasesDown = driver.findElements(By.xpath("//tr//td[3]//p//span[#class='data-down']"));
List<String> casesDownList = new ArrayList<String>();
for (WebElement element : eleCasesDown) {
casesDownList.add(element.getText());
}
System.out.println("Cases Up List -->" + casesUpList);
System.out.println("Cases Down List -->" + casesDownList);

stale element reference: element is not attached to the page, while clicking a hidden button using xpath

I am trying to click following button using xpath in selenium,
<div class="bg-iconButton-button bg-common-nodrag bg-tool-maximize bg-common-hideDisplay" title="Display in full screen" id="bg-po-full-screen-1"></div>
I tried the below code,
fullscreenbutton=UtilityFunc.driver.findElement(By.xpath("//*[#id='bg-po-full-screen-1']"));
KeywordFunc.fnClick(fullscreenbutton);
I am getting following error,
org.openqa.selenium.StaleElementReferenceException: stale element reference: element is not attached to the page document
I think I am facing this issue because its enclosed as a div and not button.

Firstly you can just select your element by its ID rather than its Xpath.
WebElement fullscreenbutton = UtilityFunc.driver.findElement(By.id("bg-po-full-screen-1"));
Secondly the element you're trying to click has no onClick event associated with it nor is it a button. Are you sure your actual button is not nested inside it or is below it?

Unable to click on webelement button

Unable to click on webelement button
I tried to click on button by mouse movement but no success
my outer html is as below :
<button class="btn btn-alt btn-small" type="button" ng-click="ecdapp.uploadBlueprintModalPopup();">
Create
</button>
button xpath is:
//*[#id="page-content"]/div[3]/button

Not seeing the full page source it's hard to tell where your XPath expression is good or not, you can try locating the button using its text instead
//button[normalize-space(text())='Create']
the normalize-space() function is used to discard heading/trailing whitespaces
It might also be the case the button is not immediately available, I would recommend considering using Explicit Wait approach via WebDriverWait class
WebElement myButton = new WebDriverWait(driver, 10)
.until(ExpectedConditions
.elementToBeClickable(By.xpath("//button[normalize-space(text())='Create']")));
myButton.click();
the above code will try to locate the aforementioned button for 10 seconds and click it as soon as it will be present/visible/clickable. Otherwise it will fail with NoSuchElementException

May be the Xpath is wrong. Try the below xpath:
//button[contains(text(),'Create')]

As you can see on the screenshot this Xpath 100% works, if you still won't be able to click on that button, then problem is not with xpath. Let me know if its still fails.
By.xpath("//button[#class = 'btn btn-alt btn-small' and #type = 'button']")
Based on your comment:
I tried this code , but unable to click . element click intercepted: Element ... is not clickable at point (293, 97). Other element would receive the click: ... (Session info: chrome=74.0.3729.169)
I pretty sure I know whats your problem, before u click on this element, something going on the page:
It says - Other element would receive the click, means there is other element above(overlapping) your button(pop up window, page is greyed out(disabled while loading, Some JS running)), so when Selenium trying to click on your button its actually clicking on that blocking element.
Try to click after Thread.Sleep(); wait 5-10 sec.
If this is the case then u need to add condition before find your button to check that element that prevent from clicking on button is disappeared then u click on it.

Try JavaScript executors as below,
WebElement element = driver.findElement(By.xpath("<xpath of button>"));
JavascriptExecutor js= (JavascriptExecutor) driver;
js.executeScript("arguments[0].click();", element);

Selenium: Element could not be scrolled into view

I am trying to learn Selenium using java with Eclipse. I am trying to locate one element in the webpage.
I tried using this line of code to click on one html <a> element:
driver.findElement(By.xpath("//a[#href='itemDetail.php?id=19']")).click();
The picture below shows the html structure of the page:
With that piece of code, I ran into an exception:
Element <a href="itemDetail.php?id=19"> could not be scrolled into
view
Did I use the wrong syntax to locate the element?
Thank you for the advice.

The locator looks good as you haven't received NoSuchElement exception. Try the below javascript click, which does not need the element to be scrolled into view.
JavaScript Click
WebElement element = driver.findElement(By.xpath("//a[#href='itemDetail.php?id=19']"));
JavascriptExecutor js = (JavascriptExecutor) driver;
js.executeScript("arguments[0].click();",element);
If you want to scroll the element into view and the do normal click user the below code.
Scrolling into view and normal click:
WebElement element = driver.findElement(By.xpath("//a[#href='itemDetail.php?id=19']"));
JavascriptExecutor js = (JavascriptExecutor) driver;
js.executeScript("arguments[0].scrollIntoView();",element);
element.click();

To locate and click() on the desired <a> element you can use the following solution:
new WebDriverWait(driver, 20).until(ExpectedConditions.elementToBeClickable(By.xpath("//div[#class='container']//figcaption[text()='Play-Doh Rainbow Starter Pack']//preceding::img[1]"))).click();

Get page element by title attribute - Selenium and Java

I'm trying to get the image which has the word "Collector" in its title and click on it.
This is the html code for the image and its link:
<a href="javascript:*command*" title="Level III: KPI Collector RYG of D D/Testing - SYS">
<img src="*unusable link because it's only valid for the specific page*" title="Level III: KPI Collector RYG of D D/Testing - SYS">
The <a> and <img> tags are nested in a table cell and some divs. I didn't write the html code so don't yell at me if it's ugly :p
Here is the java code where I try to do it:
WebElement trafficLight = driver.findElement(By.xpath("//img[contains(#title,'Collector')]"));
trafficLight.click();
The error I get is:
Exception in thread "main" org.openqa.selenium.NoSuchElementException: Unable to locate element: {"method":"xpath","selector":"//img[contains(#title,'Collector')]"}
I'm pretty sure the xpath is ok so I don't think that's the issue.

As the img WebElement is within a frame, you will need to switch focus to that frame before you perform any action on that WebElement. You can do that using WebDriver's switchTo() method like so:
driver.switchTo().frame(frameLocator);
The frame locator can be either its (zero-based) index, name or id attribute, or a previously located WebElement.
Once you have switched focus to the required frame, you should then be able to interact with the WebElement using the same code in your initial post.

Please try this. It will resolve your problem.
WebElement frameSwitch = driver.findElement(By.xpath("Give iframe Xpath location"));
driver.switchTo().frame(frameSwitch); //Switch control to iframe.
//Perform your steps (I.e Click on Image)
driver.findElement(By.xpath("//img[contains(#title,'Collector')]")).click();
driver.switchTo().defaultContent(); //Come out of iframe.