I found a possible bug involving the can_break component and frosted ice (minecraft:frosted_ice).
Steps to Reproduce:
Switch to Adventure Mode.
Give yourself a pickaxe that can break frosted ice.
Example:
/give @p netherite_pickaxe[can_break={blocks:"minecraft:frosted_ice"}]
Place or generate frosted ice (minecraft:frosted_ice).
Try to mine the frosted ice with the pickaxe.
Expected Result:
The player should be able to mine frosted ice because it is listed in the item's can_break component.
Actual Result:
The frosted ice cannot be mined at all. No breaking animation appears.
Additional Information:
The item tooltip correctly shows that it can break frosted ice.
The same can_break setup works correctly with blocks such as stone.
The issue appears to be specific to minecraft:frosted_ice.
Tested in Adventure Mode.
Can’t reproduce in 26.4 Snapshot 5. With that exact pickaxe in adventure mode, frosted ice breaks normally for me.