The carrot stage 3 file name is incorrect on BE. It was added to fix and update the texture in parity with Java, however, it uses the incorrect name as carrots_stage3, when it should be carrots_stage_3. This causes the fix to not appear in-game at all.
Does this prevent the fully grown carrot from appearing, or is it just that the one pixel fix mentioned here doesn't apply?
Removed wandering pixel in the Carrot stage 3 texture (MCPE-148563)