So sorry none of those worked. I'll have to get back to you with a solution or a patch.
3 years ago(+2)
I got this bug too on the level after this, and I think I know what causes it maybe? In the level this person is showing, I managed to exit the level before dad did. Then in the level right after, it only let me complete that level when I completed it before dad again.
To complete the levels before dad, I used a glitch where if you have a reprogrammed/possessed robot's code open when the level ends, it gets permanently reprogrammed with what your code page 0 was when the level ended with its code open.
Hope that helps!
I also got stuck on the second level chasing dad after the wizard and squirrel go to the bar.
I had also managed to beat dad to the exit in the previous level, so after reading this comment I tried to reproduce the glitch to beat dad to the end but was unsuccessful.
Based off the theory of beating dad the first time causing the glitch in the second level, I tried to go back and finish the first level without beating dad, but it wouldn't accept the level as passed.
I then started a new game for a fresh start, but am similarly unable to pass the first level - I believe that this inability to win after dad was the reason I thought I needed to beat dad to the exit in the first place, but it doesn't seem possible to do so in the second level.
I've included a screenshot of the second level with my character at the exit. I can provide more if necessary.
3 years ago(+2)
I got the same problem on this level. I did not complete any level before dad did, so I do not think the behaviour described by rerere284 is the main (or only) cause for this bug.