Glass issues
MCPE-32632Transparent Blocks See Through Other Blocks & Mobs
Duplicate
MC-133376Glass in 1.13-Pre7 now drips water (intentional or oversight?)
Duplicate
MC-144623Foxes can't see mobs that are in fenced areas or behind glass blocks
Won't Fix
MC-168464Spawner Particle effect does not render through (colored) Glass Panes
Duplicate
MCPE-64197 Things are invisible if look through glass in F5
Duplicate
MCPE-102203Glass dropped on transparent blocks shows the block below
Duplicate