Hi guys, I found this should be fixed https://community.progress.com/community_groups/rollbase/f/25/p/6624/25434
But I still have the issue to auto-format the phone number when I entered the numbers in-line.
and also, when the trigger create another record in other object, the phone number is not auto-format either.
Thanks for bringing this to our notice. I can confirm the behavior you see and it does seem to work fine on classic UI mode (in classic UI you will have to enter the value and tab out for it to format before clicking on save, but the similar behavior doesn't work in new UI). We will fix this.
We already have a defect logged for this(TP id :30381)