This is a regression from the MC-84069 fix. Instead of constantly blinking, beacon effects no longer blink at all in the HUD, even when they are about to run out because the player has moved out of the beacon's range.
Comments 3
I think it should fix by this instruction. Testing with MCP 1.9.
Effect icons from effects from beacons and conduits currently never blink. However it wouldn’t be an issue to make them flash like other effect icons, because beacons give the effect for more than 10 seconds (unless the pyramid is not big enough, but most people build the pyramid at maximum size) and the conduit too, so they wouldn’t constantly flash when in the range of them. I hope this gets reopned at some point and fixed, so that they flash like normal effect icons.
There would simply be too much code to fix this (each effect would need to keep track of its source, its coordinates, and its range)