I'm in the crystal caves and I just got to the cutscene where you find Theo in the caves. The cutscene goes just fine until the part where you're supposed to dash to (presumably) break him out of the cave. It freezes with the dash arrow in place and the game stops accepting input.
I'm playing on Windows 10 with an X-Box 360 controller and have Assist Mode on with Dash Assist enabled
EDIT: I turned off Dash Assist and was able to complete the cutscene, it seems there's an issue with Dash Assist there