I’ve checked the Actions tab for the component, but there is no “Title bar Add action” available to remove .
There’s also no related option in the Options section.
The button doesn’t appear to be a manually added action, but rather an automatically generated “Add” button , since the component itself doesn’t expose any control for it.
If you have any other ideas on where this “Add” might be coming from (especially with Maps / Collections), I’m happy to try.
Based on your screenshot, it seems you selected the “Map” component instead of the “Collection component. That "+Add” button is the title bar action of the collection.
On the left click on collection, then on the right click on actions. There you can remove the title bar action.
Just to close the loop: I solved it by deleting the Map component entirely and recreating it from scratch .
After rebuilding the map, the “+ Add” button disappeared and didn’t come back.
Looks like it was a component-level UI glitch rather than an action or permission setting.