ToolTip remains over popup window in Win11 22H2

[hakito]

Bug explanation

Description

When a tooltip is shown and a popup window is opened, the ToolTip remains iff the mouse is also positioned above the popup.

Steps

• Position the mouse above a control with a ToolTip (and also where the popup will appear)
• Use a keyboard shortcut to open a popup window

Reproducing the bug

I tested the behavior on different systems. It seems it only shows up in Win11 22H2 so far.

Host	Windows Version	Reproducible
A (RDP)	Win10 22H2 19045.2130	No
B (RDP)	Win11 22H2 22621.819	Yes
C	Win11 Home 21H2 22000.1281	No
D	Win11 22H2 22621.819	Yes
E	Win11 21H2 22000.1219	No
F	Win10 21H2 19044.2251	No
G	Win10 22H2 19045.2251	No

Unfortunately the machines running Win11 21H2 denied upgrading to 22H2. So I couldn't test if the buggy behavior shows up after the upgrade on those systems as well.

Version

4.6.1

[Keboo]

Hi @hakito this is really great testing! Thank you! A couple follow up questions.

1. Which version of .NET are you targeting?
2. Does the same issue reproduce without the Material Design library? There are a number of ToolTip related issues in WPF that could be contributing.

[greuelpirat]

ad 1. it's net48 ad 2. I was not yet able to create a demo-app without MDIX to reproduce this issue, but we will work on this