Categories and Language are multiselect. Firstly I select option in Categories and works fine, next I select option in Language and works fine as well. But when i "go" to the categories and remove one option (click in "x" sign) option disappear but when i click below (outside multiselect) something bad happening with categories - new categories are removing or adding when i click outside. Probably multiselect is still expanded but no visible. I have a screen record but i cannot attach.
Hey @szymon! Would you mind sending an email with that screen recording to victoria.campbell@retool-ba9e93d5caa4.intercom-mail.com? 
I've just sent.