Can confirm I also had this issue on 1.14.1, under Linux. Only happened once and did have to exit and reconnect to fix.
This seems to still be happening in 1.14.1 release. This makes shulker farms unusable. I doubt this was an intentional change, as I can't find any information about it anywhere.
PLEASE check to see if your bug has already been reported before submitting a new one. This has already been reported many times, and this is the master bug:
Aiden: you are likely editing the file in the wrong mode (non-UTF-8 or using the wrong line endings). Edit it with Notepad++ or another editor which automatically detects the correct file type and line endings.
This should be closed as this is not a bug.