Tooltips on ComboBoxItems in WPF for .NET 6 appear and immediately disappear

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WPF is a .NET Core UI framework for building Windows desktop applications.

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Tooltips on ComboBoxItems in WPF for .NET 6 appear and immediately disappear #5870

Closed amirburbea closed 2 years ago

amirburbea commented 2 years ago

.NET Core Version: (e.g. 3.0 Preview1, or daily build number, use dotnet --info) 6.0.101
Windows version: (winver) 22000.376
Does the bug reproduce also in WPF for .NET Framework 4.8?: No
Is this bug related specifically to tooling in Visual Studio (e.g. XAML Designer, Code editing, etc...)? If yes, please file the issue via the instructions here. NO
Security issues and bugs should be reported privately, learn more via our responsible disclosure guidelines.

Problem description: In .NET 6, WPF tooltips on ComboBoxItems seem to close instantly, In .NET 4.8/5 this is not the case.

Actual behavior: Popup appears but immediately vanishes

Expected behavior: Popup on ComboBoxItem stays visible

Minimal repro: https://github.com/amirburbea/PopupRepro

huiliu-code commented 2 years ago

I tested your code in Microsoft Visual Studio Professional 2022 (64-bit) Version 17.0.4.Tooltips on ComboBoxItems did not disappear immediately. My environment is Windows 10 (20H2). Did I misunderstand something?

lindexi commented 2 years ago

See #4612 https://github.com/dotnet/wpf/issues/5703

amirburbea commented 2 years ago

@huiliu-code Your screencast is only demonstrating you hovering over the listbox items which as I mentioned work fine. The repro product has a listbox (on the left) right next to a combobox on the right. if you opened the combobox (dropdown) you'd see that the toolitps on those items disappear on win11. I don't have windows 10 anymore to test.

amirburbea commented 2 years ago

@lindexi - Those bugs seem unrelated to this one - is this comment to just group this bug with the others?

lindexi commented 2 years ago

Sorry @amirburbea

amirburbea commented 2 years ago

Here's the app running in .NET5 net5

Here's the same app running in .NET6 net6

huiliu-code commented 2 years ago

Hi,@amirburbea. I reproduced your problem. It may be a problem with .Net 6. It is recommended that you could report the problem in the Developer Community.

Yoooi0 commented 2 years ago

This seems like a duplicate of #5716. The actual issue is not only with ComboBoxItem but with tooltips on any control inside a Popup control, caused by a Mouse.Capture(this, CaptureMode.SubTree); call.

@amirburbea If possible, you could also add my user control that reproduces the issue to your PopupRepro.

SamBent commented 2 years ago

This is a duplicate of #5716. Let's track it there.

amirburbea commented 2 years ago

But @SamBent that ticket is for somereason labeled as needs more information. I feel that label means they won't work on it

SamBent commented 2 years ago

@amirburbea I assure you they will work on it. In this case "they" is me, and I'm working on it right now.