Mentioned in the comment section at ESOUI by Garkin.
When dropdown widget is updated comboboxCount is reset back to 1. Usually it doesn't matter, but if you are creating controls directly (and you don't have any other option if you want to modify created controls), some comboboxes could already exist and then you will get an UI error because of duplicate cotrol names.
Mentioned in the comment section at ESOUI by Garkin.
Should be fixed in #1 This is related to #2