Happy Ghasts in fully grown stage create lag and stop-frame experience while using vibrant visuals in the follow situations:
Leashed
Unleashed
Leashed in hand of player
Leashed attached to fence
Wearing any color harness
Not wearing a harness
Resulting Issue I care about:
Unable to place and break blocks in repetition while Happy Ghasts are around without considerable lag and issues with placements of blocks and inventory number of blocks changing without the block actually being placed in the selected space.
This issue is being tracked at MCPE-222147.