1) If a player takes a bottle in his left hand, then he can throw it like a regular bottle with experience, and given that there are external experience modifiers on the server, he can get more experience than he put in infinity
2) If you just write the /bottled store max command, then even if you have 0 levels you will get 1 bottle with experience
3) If you use a dispenser with experience, you will always get more in the case of point 1
This cant really do anything with if you have different plugin which modifies dropped exp amounts. What I can do is to introduce minimal exp required for you to be able to store it inside exp bottle to avoid those bottles with tiny amounts of exp inside of them. Next update.
1) If a player takes a bottle in his left hand, then he can throw it like a regular bottle with experience, and given that there are external experience modifiers on the server, he can get more experience than he put in infinity 2) If you just write the /bottled store max command, then even if you have 0 levels you will get 1 bottle with experience 3) If you use a dispenser with experience, you will always get more in the case of point 1