I am encountering strange behaviour when editing the task form of tasks in a Nintex Workflow on SP 2013.
The only browser that's working for me is IE11. When I try to save changes to Control Settings, nothing happens. I can't seem to click open the "Appearance" and "Formatting" headers either. I tried clearing the browser cache, without result.
The debugger gives following errors:
When opening control settings:
SCRIPT5009: 'NW$' is undefined
When clicking the save button:
SCRIPT5007: Unable to get property 'InsertReferences' of undefined or null reference
Any ideas? This is blocking all work on workflows atm.