First of all, Thank you for trying out the game :).
And yes, I used Pivot Animator 5 For creating the Player character animations. I agree that it is a pretty good software for creating stickman animations in my opinion.
As for the bugs, thanks for informing me about it. I did feel that something like that could happen but I was nearing the deadline when creating the game (A bit of procastination habit of mine caused this) so I didn't pay much attention to it. I should have done more playtesting which I obviously will from next time.