Thank you so much for reviewing our game!
We were on a bit of time constraint because my laptop ( i was handling level design, programming and all) crashed for a whole day and was not able to reboot it till the end of day (9th day) so we had to cut a few slacks.
I think the double jump occured in caveran level when you get cornered in wall. No, its not a bug, I occured to that bug while testing it, but i didn't have time to fix it. Pulled an all nighter to complete the game (though there is still boss level left).
We would try our best to fix the game, thank you so much :D