How to reproduce:
1. Open the attached project
2. Open the Maintainer window (Tools/Code Stage/Maintainer/Show)
3. In the Maintainer, select the "References Finder" tab
4. Press "Find all assets references"
5. Locate any asset paths from the "Packages" folder in the search results (usually located at the bottom of the list)
6. Press the eye icon next to any of the "Packages/*" result items

Expected result: the Project Browser expands folders in the "Packages" folder to highlight the selected file.
Actual result: the selected file is shown in the Inspector, but the "Packages" folder (in the Project window) is not expanded.

Reproducible with - 2018.2.0b7, 2018.3.0a1

Notes:
- Could not be tested on versions prior to 2018.2, since the above mentioned "Packages" folder was introduced in 2018.2.
- The issue always occurs when "Packages" folder is completely collapsed.
- Sometimes when "Packages" folder is extended, the selected file is still not highlighted.

Fixed in 2018.3.0a6
Backported to 2018.2.0f1