[Bug 58331] New: Wait cursor does not display

[WineHQ Bugzilla]

http://bugs.winehq.org/show_bug.cgi?id=58331

Bug ID: 58331
           Summary: Wait cursor does not display
           Product: Wine
           Version: 9.0
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: win32u
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

Created attachment 78705
  --> http://bugs.winehq.org/attachment.cgi?id=78705
Example

Starting from Wine version 9.0, the waiting cursor no longer appears when
attempting to set it to indicate a long-running operation in MFC applications
or other programs. The issue appears to have started after the commit on June
13, 2023.

Steps to Reproduce:
1. Run the attached simple MFC application.
2. Click the button "Start Long Operation"

Expected Result:
The waiting cursor should appear for the duration of the 3-second sleep.

Actual Result:
The waiting cursor does not appear during the Sleep call. The cursor remains
the default arrow.

Example Application:
The example application has been attached. It uses the most basic
implementation of the CWaitCursor class, as described in the official Microsoft
documentation:

https://learn.microsoft.com/en-us/cpp/mfc/reference/cwaitcursor-class?view=m...

Regression Commit:
The issue seems to have started with the commits made on June 13, 2023:

https://github.com/wine-mirror/wine/commits/master/dlls?author=rbernon&s...

Notes:
This issue does not occur in Windows, where the waiting cursor appears as
expected.

Environment:
Wine version: 9.0+ (possibly Wine 8.x, but not 8.0)
Operating System: RHEL 7.9, RHEL 8.10