Is there any setting in Eclipse to show only the Maven project where the file resides?
I have different Maven projects which are modules of a parent Maven project:<
I just had the same issue and what worked for me was to select Filter Duplicated Resources in the Open Resource dialog:
Another (unrelated) useful feature is to hide submodule-folders from the parent-project in the package explorer.
This can be done by using the Maven modules filter in the menu of the package explorer:
Tested with Eclipse 2019-06 (4.12.0)