I actually know that this bug is tagged corrected but he is not. So to resume, if you are in adventure mode, you're unable to place a water bucket or a lava bucket on a block with the tag CanPlaceOn on the item.
What I expected to happen was...:
The water/lava have to be placed on the block
What actually happened was...:
The water/lava was not placed
Steps to Reproduce:
1. Give yourself a water/lava bucket with tag CanPlaceOn on a block you want (for example: /give @p minecraft:water_bucket{CanPlaceOn:["minecraft:prismarine"]} 1 )
2. Try to place the water/lava (For the example, on prismarine)
3. Observe
Linked issues
Comments 2
Thank you for your report!
We're actually already tracking this issue in MC-136470, so I resolved and linked this ticket as a duplicate.
However, that ticket has already been resolved as Fixed. The fix will arrive in the next version or is already included in the latest development version of the game.
If you haven't already, you might like to make use of the search feature in the future to see if the issue has already been reported.
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This is fixed in one of 1.15 snapshots