Unable to select game asset folders using searching in two column layout when search location filter is set to "Packages" or "Assets"

Steps to Repro:
1. Create a new project
2. Right-click project window header and select two column layout
2. Project window > Search by type, label or name
3. Click on the search filter drop down and set it to "In Packages" or "In Assets"
4. Try selecting any of the folders in the left column

Actual result:
1. The user is unable to select any of the folders
2. By default, the filter comes as "Assets"
3. When the search filter is set to "All", "<currently selected folder name>" or to "Asset Store", the user is able to select folders in the left column

Expected Result:
1. The user should be able to select folders in all the cases
2. On selecting folders cancels the current search

Note:
1. Packages filter was introduced from 2018.2.0b7

Environment:
Windows and Mac

Occurring with:
2018.3.0a2, 2018.2.0b9, 2018.2.0b7

Working with:
2018.2.0b6, 2018.1.3f1