Possible issues with breakpoint debugging

Via a conversation I had with /u/morginez on reddit (after seeing this comment thread), this person reported some potential issues with breakpoints not being hit (or hit in an unexpected order):

Back then the debugging never really worked at all and I tried to get around it using console.log()-calls.

Breakpoints wouldn't be hit or were hit in a weird, desync-order from what actually happened in the code. I could not really work with the debugging tools at that point.

He has provided a repo of the problem app as well: https://github.com/tihansen/words-challenge/tree/master/app