Question:

Why am I getting a black thumbnail in my clip points/screenshots using Safari after upgrading MacOS?

Answer:

Apple added an experimental feature to Safari called "GPU Process: Canvas Rendering" that is causing this issue.  This article will show you how to disable this experimental feature.

1. Open Safari
   
   
2. In order to disable this feature, you will need to first enable the "Develop" menu. At the top left, click on Safari > Preferences
   
   
   
   
3. Once the menu opens, click on Advanced and then select “Show Develop menu in menu bar.
   
   
    
4. Once you have done that, you can close the menu.  Now look at the top menu bar again, you will see a new menu option called Develop.  Click on the Develop menu and mouseover Experimental Features. A list will pop out to the right. Scroll down till you see "GPU Process: Canvas Rendering" and click on it (which will uncheck that setting).
   
   
   
   
5. Now you will want to quit Safari. You can quit Safari in a couple of ways:
   • Right click on Safari in the App Bar and clicking Quit.
   • Click Safari in the top left menu and click Quit Safari.
     
     
6. Once it has closed, re-open Safari and your thumbnails should not be black anymore.

Additional Notes:

Issue was discovered after an update to MacOS Monterey 12.1 using Safari 15.2. 

Applies to Version:

All