When entering the mastery cave the game crashes upon interacting with anything.
Hey, this will be fixed in 1.6.14.3, which was submitted to Apple yesterday. We're just waiting on them to approve it so we can release the patch that fixes the issue
Edit: Apple approved it for release ~3 hours ago, be sure to update and let me know if the issue still persists! You can check that you have the right update by tapping [?] on the title screen and checking the bottom left corner.