v-olzhan

Verified this issue in Winforms main branch for .Net 9.0, it has same result as above Eudora's. Byte Array Property Editor can be displayed: 

@elachlan This issue can reproduce in both .Net core and .Net framework for derived MyCheckListBox using following test sample. For derived MyCheckListBox, when focus on item, then move mouse to...

> @Olina-Zhang: Do we have any DataGridView-binding-related bigger manual test scenarios we could apply for this with a set of private binaries resulting from this branch? We have some .Net...

It still repro in the latest .Net 9.0 SDK build: 9.0.100-alpha.1.24053.14. 

@merriemcgaw it also repro in .Net 8 and the latest .Net 9 builds. And I try to create a simple application, form1 with button1 and empty form2. It has following...

> @Olina-Zhang Maybe try a MFC app and see if it suffers from the same problem? Verified it in a MFC app I created, CloseWindow by "taskbar -> right click...

@merriemcgaw I tested it on Win10 22H2 OS in MFC application, it is same as above Winforms behavior(GIF) I attached. https://github.com/dotnet/winforms/assets/26474449/a8215cde-eeeb-42d2-ba81-496aca4476ad

@elachlan No, I am not sure what is the exactly path of Windows team about this issue. @merriemcgaw can you point to me if it needs?

Thanks @merriemcgaw, I have submitted a feedback to Windows by Windows feedback. Closing this issue now.

Verified in the latest .NET 9.0 SDK build: 9.0.100-rc.1.24407.28 to check GDI objects for every rdp connection, it is not increased.