The bug
So if filled cauldrons act like water and can put the player out when they are on fire, shouldn't the player also be able to use their riptide trident when standing in a filled cauldron?
Linked issues
is duplicated by 10
5 more links
MC-197972
Players are unable to take off with a Trident enchanted with Riptide III from a full cauldron.
Resolved
MC-238722
Riptide Tridents don't work in filled cauldron
Resolved
MC-255698
Unable to riptide out of water cauldron
Resolved
MC-263634
Riptide does not work in cauldron
Resolved
MC-298379
Using trident with riptide enchantment in cauldron filled with water doesn't work
Resolved
relates to 4
Comments 3
Confirmed for 1.14 Pre-Release 1
This is still true in 20w16a.
I am pretty sure this should be easy to fix; many waterlogged blocks have similar behavior to water when using riptide, and any cauldron with a state above 0 (with water) should allow the riptide trident to be thrown.