pablo, we are glad you like it! Thanks for reporting it, we are already aware of the issue and are working on a fix so this does not happen during tutorial. During the game it should not be that big of an issue as there is a gravity field and mechanism that updates direction angle when it's too flat, though it works too slow for tutorial in the current version.

I like it. During the tutorial, my ball bounced off at a nearly flat angle, and it took a while to come back down to the part of the screen with anything interesting.