Hey, thanks for playing! I noticed that crash but ran out of time to figure out what was causing it - I’m glad you found it! I’m planning on using this as a basis for a full match-three game in the future, so that will be important to fix.
The black striped borders were supposed to represent “cursed” tiles, although I wanted to have a bit of a glowing animation rather than a simple overlay. Those tiles can’t be swapped with / moved until the curse is cleared from that tile.
I enjoyed using Godot, and my desktop (which is what I use each day as well as what I developed this on) runs Linux, so it was harder to find a Windows machine for testing that build :D