Instant App Edit Feature Bug?

[azernx]

The Edit functionality worked fine for my co-worker up until a certain point yesterday. I created the app and it still works for me but whenever my research assistant clicks edit button in the instant app the sidebar goes blank.

I thought it may be their machine but we reproduced it when they logged into AGOL on my computer. 

They tried editing in Map Viewer version of the map feeding the Instant App and the same thing happened. The Edit sidebar in the map goes blank. The map and editing works fine in Classic Viewer, however.

May be a bug? Something to do with creator vs editor user types?

[ChristopherCounsell]

We've had this issue lately for side panels in Map Viewer. Get error messages in the browser developer console.

Seems to go away over time. Or if we refresh the page using CTRL + F5 or a cache clear.

Waiting to capture it occurring again before lodging a support ticket.

Not sure if that is what you are seeing, but it's very similar.

[ArmstKP]

@ChristopherCounsell @azernx I have had this issue in the Sidebar Instant app and the Map Viewer edit toolbar.  The reason I was having the blank edit window was that one of my tables in the webmap wasn't loading for some reason (I won't go into the specific reason).  Once I got rid of the troubled table, the issue resolved.  Check to see all your layers and tables are loading in the web map correctly first.