I didn't know you could use buildings like that! Having them within your island seems unintended and also a little overpowered? I assumed the top of the island could only be so wide to avoid shield stacking.
I can verify that this happens in 1.14. It happened to me for the first time after a good 5 or 6 so worlds, where I was facing a boss enemy. I killed him, and it froze.
Edit-
It happened the second time I tried, but this time I died and was being destroyed.
