I have submitted this via email to support as well, but thought I would see if anyone on the forum has some insight as well.
I now have a new issue with lookup checkboxes. Just a few weeks ago I was able to filter a lookup checkbox based on an input field in the same form (also a lookup, but a dropdown).
Now when I apply the filter the list of checkbox values doesn't show up (note: you can filter for addeduser but not based upon the other dropdown lookup field.)
Also, before I could set the number of columns in the checkbox lookup but that feature seems to be missing as well.
Has there been a major change in the lookup checkbox functionality? Was this part of the recent major update?
Thanks for your help,
Joel