This sounds very similar to the problem in issue #852770 (fixed in https://github.com/PintaProject/Pinta/commit/78c1fa96d378b2bcfb75eaab506772433e237a2c).
When keys like Caps Lock or Num Lock are enabled, they show up as modifier keys that are pressed down.
On my machine, enabling Caps Lock or Num Lock allowed me to finally reproduce this issue.
This sounds very similar to the problem in issue #852770 (fixed in https:/ /github. com/PintaProjec t/Pinta/ commit/ 78c1fa96d378b2b cfb75eaab506772 433e237a2c).
When keys like Caps Lock or Num Lock are enabled, they show up as modifier keys that are pressed down.
On my machine, enabling Caps Lock or Num Lock allowed me to finally reproduce this issue.