Touch: it's sometimes possible to create "multitouch zigzags" with the draw tool
![Image](https://github.com/user-attachments/assets/ade12da8-e045-4cf1-893c-e37e683d1532)

Not sure how to reproduce this, but i find that if you try and do it enough it'll happen eventually.

Interactions should be cursor-locked / only accept the primary cursor