When looking through spyglass when having potions/beacon/conduit effect, the particles are visible, which sometimes covers the entire spyglass view. This report is a parity issue with Java, which is just fixed for the next snapshot (MC-206601).
MCPE-128339
Potion particles shows when looking through spyglass
Open
1
(Unassigned)
531644
Confirmed
Multiple
accessibility, vanilla-parity
1.18.10.21 Beta, 1.18.10.20 Beta, 1.17.30.20 Beta, 1.17.20.23 Beta, 1.17.20.22 Beta, , 1.18.0, 1.18.12 Hotfix, 1.19.31 Hotfix, 1.19.41, 1.21.0
Retrieved
affects 1.17.30.20