When you place/remove any stained glass on top of a beacon, there is a delay in the beacon realising that it needs to change its colour of its beam. This was a bug in Java Edition that was fixed, but Bedrock Edition hasn’t had it fixed.
MCPE-67754
Beacons are slow to register that stained glass has been placed/removed on top of it
Resolved
Duplicate
0
Thank you for your report!
We're actually already tracking this issue at MCPE-24035, so I resolved and linked this ticket as a duplicate.
If you would like to add a vote and any extra information to the main ticket it would be appreciated.
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