Cutting beginning 2 and ending 2 letters off

When I enter a single value, Autocomplete Deluxe gives me a nice and fancy input box with autocompletion.

But when I enter a value (doesn't matter if it exists or not), it gets cut.

For example:
Enter: Hello world
Output: llo wor

A new term has been created and is now in the list.

I installed Autocomplete Deluxe after my content types were set up and the terms have been created.

I found this bug fixed in the dev version