How to fix an error

Hi,

I'm using the iOS app (3.13.6). Recently (once in a while) I get the error:

TypeError: undefined is not an object (evaluating ‘this.query.database’)

This happens (not every time) when I'm trying to save changes I made to a table or edited forms. Ninox does save the changes but the message keeps popping up. I do believe there is an issue somewhere because sometimes after a successful save, the cogwheel keeps turning and I have to stop Ninox the hard way. Also after saving a change in a form, the form displays two times in the screen (all the fields double). When I exit the form by going to another table, and come back to the form, the form is normal again (single fields).

I haven't been able to figure out where the issue is located or what I can do to fix this. There are no errors in the tables or forms to be found and the error doesn't happen every time.

Can anyone help me solve this puzzle?

Thanx