Sorry for such a late reply to this. Ive gotten a couple reports of this issue in the same exact spot. Are you able to re-create this glitch?
What I've done is adjust the map slightly so if this does happen in that same spot, you shouldn't be stuck. I'd like to fix what's actually causing the issue but I'm unable to recreate it at the moment.
This change will be included in the public update/release of Beta 1.7 on Monday! Thank you for reporting this to me.