Symptoms
Subform does not Close
Diagnoses
We have been upgrade our production server to 4.6.9 version and after this the close subform action is no longer working
So you can open the subform but no longer close it and go back to the main form
Resolution
1- deleted the "Open Sub Form" rule and added it again, this managed to solve the issue.
2- editing rules/actions structure managed to solve the issue
