Minecraft Username:
Videowiz92

Brief Description:
Magic axe replant mode causes crimson/warped fungus to replant on incorrect blocks. Also a tower of crimson/warped stems will result in the bottom and top block replanting a fungus resulting in floating fungus.

Instructions:
1. Have magic axe in replant mode.
2. Place and break crimson/warped stem above any block (or make a tower of stems)
3. Observe fungus placed on incorrect blocks and floating fungus from stem towers.

How many times did you recreate this?:
Many times

Result:
Incorrect placement of fungus from replant mode with crimson/warped stems on the magic axe. A tower of crimson/warped stems also produces an extra fungus on the top of the tower.

Expected Result:
Crimson/warped fungus should only be produced over netherrack or warped/crimson nylium. Also when a tower of crimson/warped stems is made, only the bottom block should produce a fungus.

Evidence:

 

Replant mode does not produce any fungus now - only breaks all blocks similar to Tree Feller mode. Tested on main north. @andrewkm

 

It's producing fungus like 1 out of every 5 stems, still running tests to see what causes it but here's a video:

 

Ok so it's only creating the fungus if the stem has nylium under it. The nylium naturally deteriorates back into netherrack overtime when a solid block is above it (the stem) thus only a few crimson/warped trees are properly working in Replant Mode.

@andrewkm

 

Very close, Replant mode works on natural stems but not manually placed stems. (Can't make a farm)

 

Still only sometime creates fungus.

 

Normal trees would be able to produce saplings by placing logs alone on the ground. This was how the magic axe behaved before having to tweak with nether trees. I could fill a 5x5 area 1 block high with logs and break it for 25 saplings.

 

Testing with this new knowledge I can still produce saplings by attaching a leaf block to the logs. I'll have to adjust my farms to account for this new behavior. This can be marked as fixed @andrewkm Thanks for your work @electronicboy

 

Going back to this report as it pertains to fungus and the replant mode.

Warped fungus will only be planted by Replant Mode on the magic axe if the stem is over netherrack - does not get planted over warped nylium.