Hotkey window disappears in full screen.

[Epidaurus]

Hi all,
whenever I activate the Hotkey window, I can see it in windowed mode but it disappears completely in full screen (which is the mode I prefer). If I switch back to windowed mode, the hotkey window is visible again. I tried to move to hotkey window in a position it should be visible in both modes, tried to lock the window... But whatever I do, it still disappears in full screen.
Any ideas?