I cannot edit submissions of gift registry widget

I need to edit a submission of a form that uses the gift registry widget. I used to be able to do this however now it seems that I can't un-check an item the user selected but does not want anymore.

I cloned your form and check it out. However, I cannot replicate your issue. Could you please watch the screencast below?

I cleared your form caches. I would like to recommend you to clear your browser's caches either and try it again: How to refresh your browser's cache

If your problem persists, please let us know.