I'm glad that you enjoyed it! We actually were aware of both of those bugs, but during the jam, we weren't sure how to fix them. This was both of our first time making a game in Unity (or anywhere for that matter lol), so there was a lot of learning on-the-fly, without a lot of time to bug-hunt non-critical stuff. Since then though, we have learned how to fix the tile lines, and while we still don't know why "The Winter Bug" (as we call it) exists, we did figure out a work-around that appears to prevent it from happening!
We are also going to update the movement overall for future releases, and have currently already adjusted the Launch Pads so that they feel a lot better, and better fine-tuning the player's core movement is going to be a focus at some point.
We really appreciate all of the feedback and bug reports! Thank you a bunch!