Why are balloons getting stuck in the ground? (Minecraft Realms, Bedrock)

Typically, a Minecraft player can cause a helium balloon to rise freely by attaching it to a fence post and destroying the post (or simply by attaching it to an animal). A player can also destroy a balloon once it has been placed.

However, I am working on a Realm in Bedrock edition (on Nintendo Switch), and for some reason when I place a balloon it becomes stuck in the ground and cannot be mined. It’s just stuck there.

Seems like a glitch, potentially, but I’m wondering if it has to do with some realm or game setting that I can easily fix? Has anyone else encountered/resolved this?