[Webkit-unassigned] [Bug 220892] Safari 14.x shows graphics artifacts when scrolling, using drop-down menus or just moving the mouse

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=220892

--- Comment #6 from Chris B <chrisbeaham at mac.com> ---
(In reply to Simon Fraser (smfr) from comment #4)
> We'd need direct access (ability to load the page ourselves) for debugging.

Hello Simon

I have prepared a rudimentary application so that you can reproduce and analyze this problem. Here are the necessary steps:

1. Open https://webkit-debug.herokuapp.com with Safari 14.x
        Login with the following credentials:

        Username: webkit
        Password: Bug220892

After the login you will see an error in the main screen; this can be ignored.

2. Select the “Interests & Profiles” menu item in the upper lefthand corner; this will display another menu named “Interest Profiles”

3. Select “Interest Profiles”; a new screen within the application will open.

4. Select “Performance” from the “Create Interest Profile” drop-down button at the top of the screen; this will open a new display screen within the application's window. (The contents of this demo screen are only partially complete. Please do not let that irritate you.)

5. In this new screen you may immediately see the tables or other components disappearing and reappearing as you move the mouse across the screen.

6. If nothing happens immediately, then please use the scrollbar to move the contents and try selecting the “Publish for Searching” check-box component at the very bottom of the screen. Scrolling will at some time produce rendering artifacts through the entire screen. Have patience; it will happen.

7. To logout select the same icon at the bottom lefthand side of the application window that is to the right of the “Web Kit” label.


That’s it.

Please let me know when you are finished or require assistance. Good luck!

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