The bug
When conduits are placed out of water, they create a water source block. The expected behavior would be the player is unable to place the conduit or the conduit is not waterlogged. This can further be exploited by using conduits to place water in the nether.
It was rather easily fixed in Bedrock Edition by removing the water. However, its not done in Java Edition (I hate this name) yet.
Linked issues
is duplicated by 8
MC-128238
Conduits don't have waterlogged state despite making flowing water (Now merged with MC-128236)
Resolved
MC-128240
Conduit is very buggy...
Resolved
MC-128269
conduit can be placed in the nether and when broken allows water to flow in the nether
Resolved
MC-128287
Water createable in Nether using conduits
Resolved
MC-128313
Nether is overall strange
Resolved
3 more links
Comments 7
Yep, still an issue, reproducible in survival by using a sponge.
↑ that would be a different issue. You don't place the conduit that way. And that's how force-waterlogged blocks work.
This issue has been technically fixed by not allowing conduits to be placed anymore outside of water, unless you're using cheats. You can do anything with cheats.
Agnes Larsson
Also note: It doesn't even have a Waterlogged Tag, but destroying it will update it so the water flows. Also the Hitbox is like a Full Block's Hitbox