Raw Copper Smelting XP Glitch

When smelting raw copper in a blast furnace, I am able to remove a single copper ingot and receive enough exp to gain 1+ levels, even when at level 50. Which is strange, because if I use a hopper to collect the items, then take a single item out manually, I seem to get a reasonable amount of xp, although it is still a few levels.

This is on a realm on 1.17 bedrock edition btw.