[Bug 59075] New: various focus-related winforms tests fail

[WineHQ Bugzilla]

http://bugs.winehq.org/show_bug.cgi?id=59075

Bug ID: 59075
           Summary: various focus-related winforms tests fail
           Product: Wine
           Version: 10.19
          Hardware: x86-64
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: wineserver
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

The following tests fail on current Wine:
MonoTests.System.Windows.Forms.BeforeSelectEvent:CancelBeforeCreationOfHandle
MonoTests.System.Windows.Forms.ComboBoxTest:SelectedTextWithBindingTest
MonoTests.System.Windows.Forms.ControlTest:FocusTest
MonoTests.System.Windows.Forms.ControlTest:OnValidating_Parent_Close
MonoTests.System.Windows.Forms.FocusTest:ActiveControl
MonoTests.System.Windows.Forms.FocusTest:ActiveControl2
MonoTests.System.Windows.Forms.FocusTest:ActiveControl_Disabled
MonoTests.System.Windows.Forms.FocusTest:ActiveControl_Invisible
MonoTests.System.Windows.Forms.FocusTest:ActiveControl_Null
MonoTests.System.Windows.Forms.FocusTest:ContainerSelectDirectedBackward
MonoTests.System.Windows.Forms.FocusTest:ContainerSelectDirectedForward
MonoTests.System.Windows.Forms.FocusTest:ControlSelectNextFlatTest
MonoTests.System.Windows.Forms.FocusTest:EnterLeaveFocusEventTest
MonoTests.System.Windows.Forms.FocusTest:SelectNextControlNullTest
MonoTests.System.Windows.Forms.FocusTest:UserControlFocus
MonoTests.System.Windows.Forms.FormTest:ActivateTest
MonoTests.System.Windows.Forms.FormTest:ChildFocused
MonoTests.System.Windows.Forms.FormTest:GotFocusWithoutCallingOnLoadBase
MonoTests.System.Windows.Forms.FormTest:OnActivateEventHandlingTest1
MonoTests.System.Windows.Forms.MdiFormTest:ActiveControlTest
MonoTests.System.Windows.Forms.MdiFormTest:SelectPreviousControlTest
MonoTests.System.Windows.Forms.TabControlTest:EnterLeaveEvents
MonoTests.System.Windows.Forms.TabControlTest:SelectedIndexChangeFiresFocus
MonoTests.System.Windows.Forms.TextBoxTest:FocusSelectsAllTest

To test, download
https://dl.winehq.org/wine/wine-mono/10.4.0/wine-mono-10.4.0-tests.zip and run
"wine run-tests.exe System.Windows.Forms"

f5944829dc8620b48f8ebde59a9ee8a7734a7f8d is the first bad commit
commit f5944829dc8620b48f8ebde59a9ee8a7734a7f8d
Author: Rémi Bernon 
Date:   Wed Nov 19 15:26:28 2025 +0100

server: Forbid background process window reactivation.