The bug
Placing one of the listed entities at the position of tripwire or vice versa does not activate the tripwire until another entity activates it. In this case the tripwire remains active.
This affects pressure plates as well.
This bug affects:
-end crystals
--snowballs- [fixed in 1.16.2-pre1]
--enderpearls- [fixed in 1.16.2-pre1]
-paintings
-item frames
--thrown potions- [fixed in 1.16.2-pre1]
--eggs- [fixed in 1.16.2-pre1]
-eyes of ender
--experience bottles (without orbs)- [fixed in 1.16.2-pre1]
-evoker fangs
Way to reproduce:
1) Simply just place an end_crystal/painting/item frame at the position of tripwire (or pressure plate). Notice it doesn't activate.
2) Activate tripwire manually by hovering over it with your body.
3) The tripwire will remain activated.
Related issues
Attachments
Comments

Can confirm for MC 1.12.1.

This bug also affects enderpearls, snowballs, thrown potions

affects 20w17a, can I request ownership?

Yes, thanks @unknown, you are now the reporter and can update affected versions yourself.
Can confirm in 21w03a.

End crystals also have the same problem on pressure plates

Can confirm in 1.17.1 Release Candidate 1.