You are meant to be able to open a shulker if a top slab it above it, and you can, but if you flip it, and have a shulker opening towards the ground, and a bottom slab beneath it, the shulker will not open (same with trapdoors)
MCPE-97787
Opening Shulkers
Resolved
Duplicate
0
Thank you for your report!
We're actually already tracking this issue at MCPE-38467, so I will resolve and link this ticket as a duplicate.
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