The Bug:
I was playing around with ender-pearls in a creative test world then I accidentally teleported inside of a glass block. For a split second, I saw a glimpse of a black screen so I decided to experiment. I got some pistons, redstone, and some glass and I trapped myself inside of a glass block and instead of seeing through the block while in it, I was only shown a black-ish screen which is not something I expected.
To reproduce:
Create a piston mechanism that will enable you to get squished by glass blocks and prevent you from crawling.
Somehow activate the said pistons.
Observe the black screen.
→ ❌ You wouldn't expect something like this to happen to a transparent block but apparently it does which leads me to conclude that this is a bug.
Screenshots:
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Thank you for your report!
We're actually already tracking this issue in MC-175256, so I resolved and linked this ticket as a duplicate.
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