I had this issue trying to edit a Webappbuilder App in which the ownership had been changed to somebody else.
This applies even if you are an administrator. You need to change the App's ownership to yourself, perform the App changes then change the ownership back is needed.
Even when the app is shared with a Group (created with the option to allow members to updated all content)
The steps I followed are:
1. Created a group “GROUP1” with the option “Members can update all items for this group” checked.
2. I have added a second user to the group.
3. The second used shared an application created in WebApp Builder with the GROUP1
a. The App is not owned by me
b. App id 1dbabb1c6b8044a39c27335fe5283c43
4. When I try to edit the app it does not allow editing.
a. No Edit option on the item details either.
5. I have also tried to use a direct link to webappbuilder with the App item id
a. https://myurl/arcgisportal/apps/webappbuilder/index.html?id=1dbabb1c6b8044a39c27335fe5283c43
b. The App opens in Webappbuilder's Edit mode but the Save Button remains greyed-out not allowing me to save changes.
This workflow is basic for App maintenance, users in GROUP1 need to be able to edit each other’s apps.
This is confirmed an issue on ArcGIS Portal 10.4.1
Can anyone confirm this issue also happens on portal 10.5.1?