Shift-mask doesn't work under linux

[thomas-lehericy]

I've downloaded the latest version both on a windows computer and on a linux one (ubuntu 16.04). When clicking a sticker while holding a number key, on the windows computer the corresponding layer turns, but not on the ubuntu computer. This is annoying on 4+^4.

[cutelyaware]

That's more than annoying, it makes it impossible to solve those puzzles. Neither Roice or I have a Linux box but he says it works for him when he has a mouse plugged in. he'll take a look and maybe ask you to test things. I've also verified that it shiftmask right clicks work on my laptop but not left clicks. I suspect that broke when I upgraded the OS to Win 10.