[Bug 57114] New: Fading text still visible when "opacity:0" set

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=57114

Bug ID: 57114
           Summary: Fading text still visible when "opacity:0" set
           Product: Wine
           Version: 9.16
          Hardware: x86-64
               URL: https://cef-builds.spotifycdn.com/cef_binary_127.3.5%2
                    Bg114ea2a%2Bchromium-127.0.6533.120_windows64_client.t
                    ar.bz2
                OS: Linux
            Status: NEW
          Keywords: download, source
          Severity: normal
          Priority: P2
         Component: -unknown
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: Ubuntu

Created attachment 77005
  --> https://bugs.winehq.org/attachment.cgi?id=77005
Screencast

The drag and drop test at https://bestvpn.org/html5demos/drag/ does not behave
as expected with the Chrome Embedded Framework sample application.

In Windows 10 the text that appears fades away (opacity:0 is set). See attached
video. The same is true using Chrome on Windows and Linux.

With Wine 9.16 the text remains visible until another element is activated with
the pointer.

I don't know if the effect is down to CSS, Javascript or a combination of the
two.

[Bug 57114] Fading text still visible when "opacity:0" set

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=57114

--- Comment #1 from Ken Sharp  ---
Created attachment 77006
  --> https://bugs.winehq.org/attachment.cgi?id=77006
Wine 9.16 console output

[Bug 57114] Screen does not finish updating for the CEF sample application

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=57114

Ken Sharp  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|Fading text still visible   |Screen does not finish
                   |when "opacity:0" set        |updating for the CEF sample
                   |                            |application

--- Comment #2 from Ken Sharp  ---
It finally dawned on me what is actually happening while running the other
tests.

- The "source" and "text" tests don't show anything until moving the cursor
over another part of the GUI, apparently forcing a screen update.
- The "transparency" test appears to do the opposite of what is expected,
because the screen is not updated until an additional change forces a screen
update.
- The "binary vs string transfer benchmark" appears to hang, but it does
complete and the results are not seen until a screen update is forced as above.
...and so on.

[Bug 57114] Screen does not finish updating for the CEF sample application

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=57114

--- Comment #3 from Ken Sharp  ---
A WOW64 (--enable-archs=x86_64,i386) build of Wine does not have this issue.

Possibly related: the WebGL test is very, very slow, except in a WOW64 build.