Soulworker steam version. Anyone else playing? Have you gotten Alt to work to toggle your mouse cursor on?

I've been playing Soulworker since Xigncode got proton support, however I've yet to find a proper fix for this little annoyance. A workaround I've been successfully using is just opening my inventory or some other menu to bring up the cursor.

When I mash Alt rapidly I can see the mouse cursor appear for a few frames, so it's trying. Possibly seeing double input?

Thanks for any help!