The bug
Both nether fungi as well as both mushrooms are members of the #minecraft:mineable/axe block tag. Despite this, all fungi and mushroom types can be broken immediately. As the #minecraft:mineable/axe block tag only exists to control block mining speed, fungi and mushrooms being in this tag is completely redundant.
How to reproduce
Place any or all fungi/mushrooms
Inspect each in the debug screen
Expected results
As they are instantly breakable, they should not be a member of any #minecraft:mineable/ block tags.
Actual results
They are all uselessly part of #minecraft:mineable/axe.
Attachments
Comments 3
If this is invalid, why is MC-230411 not only still open, but triaged outright? Either this should be open, or that ticket should be closed with the same justification. Having an instant-breakable block in a tool breakability tag bloats the F3 screen and is confusing for datapack makers.
I can confirm this behavior, though this could be intentional.