The bug

All sapling types (six traditional saplings + mangrove propagule) are members of the #minecraft:mineable/axe block tag. Despite this, all sapling types can be broken immediately. As the #minecraft:mineable/axe block tag only exists to control block mining speed, saplings being in this tag is completely redundant.

How to reproduce

1. Place any or all saplings
2. Inspect each sapling 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.