Sometimes keyboard tooltip of toolStripDropDownButton isn't displayed after ESC to collapse dropdown list

[Olina-Zhang]

.NET version

10.0.100-alpha.1.25058.38

Did it work in .NET Framework?

Not tested/verified

Did it work in any of the earlier releases of .NET Core or .NET 5+?

No, still repro in .NET 6.0

Issue description

Sometimes keyboard tooltip of toolStripDropDownButton isn't displayed after ESC to collapse dropdown list

Actual result:

Issue2_ToolTip_NotDisplay.mp4

Expected result: keyboard tooltip of toolStripDropDownButton is displayed after ESC to collapse dropdown list

Steps to reproduce

Repro steps:

1. Create Winforms .NET app with toolStrip and button added
2. In toolStrip, add ToolStripDropDownButton, add toolStripMenuItem for ToolStripDropDownButton
3. Set toolStrip's TabStop property to true
4. Build and run app
5. Press down to expand ToolStripDropDownButton - it will focus on toolStripMenuItem
6. Press ESC key to collapse ToolStripDropDownButton to observe

or use the sample project: WinFormsApp28.zip