Question Pen tablet cursor doesn't move in Windows 10 (VirtualBox)

Dec 13, 2018
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Hi all,
I'm using a Gaomon 1060 Pro pen tablet on Windows 10 (working as a virtual machine on the latest version of VirtualBox, installed on Debian 10).

In VirtualBox, the tablet is detected in the list of USB devices, so I added it as a filter.
The tablet is also detected by Windows, and all Gaomon drivers are installed.
When opening Photoshop, the tablet "works" (= pressure drawing, etc.)....

BUT there is a major issue: while my pen tablet enables me to draw, I don't see the cursor moving when using the pen.
The only way for me to see the cursor move is to go in the VB USB settings (at the bottom of the screen), and actually uncheck "PenTablet" from the list of USB devices.
When I do this, Windows doesn't recognise the device as a tablet anymore, but takes it for a normal mouse apparently: the cursor moves on the screen when moving the pen - and opening the Gaomon driver software, device appears as "Disconnected." (and obviously, none of the tablet's pressure settings work in this 'mouse mode', so I can't draw)

Is this a Windows issue or a VirtualBox filter settings issue? Or something else?