Howdy! After the recent update with the jar of experience, I'm experiencing an issue where it appears to create tons of experience. Here's the scenario where this happens:

1. gain 1 level of XP (xp jumps from 0L to 1L)
2. use the jar to insert the XP (xp jumps from 1L to 0L)
3. drink from the jar once to extract the XP (xp jumps from 0L ti 1.75L)
4. use the jar to insert the XP (xp jumps from 1.75L to 1L)
5. drink from the jar once to extract the XP (xp jumps from 1L ti 2.4L)
6. repeat for infinite experience

Ah my bad, I forgot to actually respond...

Thanks for the detailed report with reproduction steps! I don't have the time to look into it at the moment, but I'll do so when I find the time!