I noticed that Configured doesn't like the repeating of certain characters.
Also side bug that I would suggest fixing:

Maybe its worth implementing a dynamic constraint that provides more space if present.

But yeah when i click on Blast Protection enchantment:

You see it removes a lot of characters that should be present.

Yes the ;;; is intentional because it is used with string.split(";") and java actually turns the entry into a null or empty string.

And since I saw you worked on this why not show this issue found a couple weeks ago.

Also small thank you for making this mod so simple to understand, helped me out with my game engine, where I want to have something like this directly implemented.

Ahhh yeah it could be that i have a outdated version in my IDE. I tend to do that. Thank you ^^"

This shouldn't happen since e2b4ede fixed the issue.
Tested myself and seems to be fine.