Weird Glitch in puzzle 112407

The correct move is Rg8+, and that is still reacting as the "best move" but I accidentally put Rh8 on the board and it accepted that as the "best move" as well. As the move it looks for next is Rxg4 this makes the second move impossible to find. Even though you still input the wrong move it's just a very strange occurrence.

Here is the puzzle: lichess.org/training/112407

This is indeed very odd.

Interesting find.

This is very similar to a glitch I found in a different puzzle:
lichess.org/forum/lichess-feedback/flawed-tactics-puzzles#3
There must be a weird bug in the puzzle code somewhere.