only the appearance, they are not charged yet
ah okay thanks for letting me know, i'll keep my eyes open for other bugs meanwhile :)
update: tested it out a bit: it’s just the appearance, when channeling a creeper with a trident the visual model stays but the explosion is much bigger… seems like a visual bug only
nope, nothing, just vanilla gameplay without cheats or any packs besides the classic textures texturepack by minecraft
I have also run into this issue, but figured out a little more through testing.
If you are gaining exp to try and repair something with mending, the game has a chance to put the exp towards your levels instead of towards mending your item. I believe the reason is that if you are wearing other armor or have a tool in your main hand that has mending on it and is fully repaired, the game will try to mend that item instead, not be able to, and will therefore end up putting the levels towards your experience bar.
Obviously, this can make repairing tools 5 times slower if you're wearing armor, and it's really easy to reproduce.
@gr8heron that's the default texture pack of minecraft. you can get others from the marketplace and activate them, they'll override the default one and appear above it.