When I run Spiral Knights on my desktop (I'm currently borrowing a laptop), the mouse cursor doesn't show up at all.

I can't tell what I'm shooting at until I shoot. (Please don't suggest auto-aim, it doesn't really help if your aim is off by more than a tiny bit.) I can't tell what direction I'll move in until I move. I can't click people to inspect them, trade with them, or interact with just about anything that requires the mouse and shows the standard triangular cursor. When I open the main menu, or move the mouse over to loadout/arsenal/recipes/social tab or some other menu, the cursor shows up as the standard windows cursor. I have tried the following to fix it, and all failed:

Switch out of full screen
Change resolution
Turn off render effects
Set quality to low/medium/high
Enable compatibility mode
Restart Spiral Knights.
Use the non-steam client.
Reinstall spiral knights

None of this has made any change at all. I have only been having this issue since shortly after the latest patch.

Note: the colors on the message previews in this forum are incredibly ugly and somewhat hard to read. It would be nice if the preview had the standard dark background OR a darker font color.