If screen/controls is/are touched upon death/defeat, success screen loads with disabled buttons. Can't release or update with this bug.
This does not happen to me but something similar is: https://www.buildbox.com/forum/index.php?threads/pause-button-goes-black-when-death.3723/#post-22844 both bugs are probably related...
Make sure you are sending your bbdoc into support@buildbox.com with a detailed explanation on how to trigger the bug so they can get it fixed