Ctrl+Shift+F10 waits before opening the ToolTip

[SamBent]

• .NET Core Version: 3.0+
• Windows version: all
• Does the bug reproduce also in WPF for .NET Framework 4.8?: Yes
• Is this bug related specifically to tooling in Visual Studio (e.g. XAML Designer, Code editing, etc...)? no

• Security issues and bugs should be reported privately, learn more via our responsible disclosure guidelines.

  Problem description:

  1. Run sample app from #4612
  2. Press TAB repeatedly to move focus to the second Image (look for the focus adorner)
  3. Press Ctrl+Shift+F10 to toggle the ToolTip

  Actual behavior: Toggle-on shows the ToolTip after a delay (5 sec). Toggle-off hides the ToolTip immediately.

  Expected behavior: Both actions occur immediately.

User's explicit request to show/hide the tooltip should be honored immediately.

[SamBent]

Fixed by the tooltip work in 6.0-preview7.