#24 crash when displaying brush tooltip

Hey there, I am trying to use OurPaint 0.4 on Windows 10 and got a crash.

To reproduce:

• open app from terminal; discard splash screen
• hover one of the brush to display its tooltip
• click anywhere else
• the app crash with no information in the terminal

Let me know if you need more details.

Let me check... This does not crash on linux for me. Thanks for reporting!