There are following issues:

Include objects not populated when selecting Other user

When opening a Code coverage report window by navigating: Connection->Other Users->Some User->Packages->UT_package->Right click (Code coverage), the field Include objects is not getting populated.

Expected behavior

Include objects gets populated the same way as it is when navigating: Connection->Packages->UT_package->Right click (Code coverage)

The objects on Include objects list re not prefixed with owner

When tests are located in different schema then the tested code, the populated Include objects list does not give expected results - no coverage is showing.

The objects need to be prefixed with schema name.

Below animation illustrates both issues as well as the correct outcomes