ContextMenuStrip not opening when moving window on secondary display

* .NET Core Version: 3.1

* Have you experienced this same bug with .NET Framework?: Haven't tried. I need to use .NET Core

**Problem description:**
Given
- a `WPF` app
- that uses the `WinForms` `ContextMenuStrip`
- in a `dual monitor` setup
- when moving the MainWindow to the `secondary monitor`
- the context menu does not display at all

**Expected behavior:**
The context menu is displayed

**Minimal repro:**
Repo: https://github.com/ccornici/tray_context_menu_bug

Demo (contained in the repo too)

Other details:
- All other tray icons from other apps (ex: Spotify, NVidia Control Panel etc) work as expected. So it doesn't look like a WIn 10 bug that affects any and all tray icons.
- **The `Opening` event of the `ContextMenuStrip` gets fired. It simply doesn't display the context menu...**