Hello,
After upgrading from v1.10.5 to v1.11 it shows empty form fields with optional visibility.
Does anyone know how to make them hidden?


It seems to me that those 4 phone number fields are something that someone has added on your end. It is unique to your installation.
Have you tried looking in Agent Panel > Manage > Forms > Company Information?
Yes, they are custom fields, but they are configured with optional display, in version 1.10 when they are empty they are not shown in v1.11 they are empty
Hmmm. Have you cross-referenced your original osTicket installation? (You did keep a backup, yes?)
I'm wondering if Enhancesoft has changed the way that they blank fields are (not) displayed.
I see something very similar in my unmodified v.1.11 installation:

What happens if you click on the —Empty— filed?
P.S. My guess is that when you click —Empty— a little window will pop up that will allow you to edit the field without editing the ticket.
This is a new feature and is actually very useful!