BUG-000147663 for ArcGIS Online

Bug ID Number	BUG-000147663
Submitted	March 16, 2022
Last Modified	June 5, 2024
Applies to	ArcGIS Online
Version found	9.4
Operating System	Windows OS
Operating System Version	10.0
Status	Known Limit

Additional Information

The issue is a known limitation of ArcGIS Web AppBuilder because simultaneous editing of an app is not supported. Refer to https://support.esri.com/en/Technical-Article/000023192 for the workarounds.

Workaround

Reload the web app

Resize the browser window. This enables the Save button to save edits made to the web app. (This resolves the issue in most cases.)
In the web app page, select another theme and click Save. Relaunch the web app.
Load the web app in a different browser. Make the required edits and click Save.

Limit access to the web app to one user at a time

Ensure no other users are editing the web app simultaneously when the web app is a shared resource.

Check and replace the JSON of the web app

Replace the JSON of the web app using ArcGIS Online Assistant for a new configuration of the web app. (Note: ArcGIS Online Assistant is outside of Esri's Scope of Support.)

Recreate the Web App

Refer to Problem: Unable to save edits in Web AppBuilder for ArcGIS article for more information on the issue.