After I updated from 1.20.6 to 1.21 the latest version of minecraft, I noticed my pickaxe was mining all ores extremely slow. sort of like an iron pickaxe would. it still gives all the extra drops but is just slow. I tried logging out and logging back in. Still slow. I was just going to revert back to a slightly older install version but Andrew recommended I drop a post here to be investigated. New Edit: Also extremely slow when turning Mythic into a high efficiency shovel, it mines sand and gravel super slow as well. I guess I can try Axe too and report back
i reverted back to 1.20.4 and my mythic can transform into any tool and be the high efficiency it's supposed to be. I think it's a 1.21 only bug.
I am not able to re-create. I tested on Ediouseig with Mythic Eff 10 Shovel, classic Star Shovel - both are digging Sand/Gravel at the proper speed. I also tested Magic Pickaxe L3 and Mythic Magic Pick L3 and am not seeing any slow mining/breaking.