[BON-7198]Plugin chooser doesn't allow picking of plugin

Issue with the plugin chooser popup window that opens when selecting an insert on any track:

The window opens,
Type ‘stein’ into the search field
The full listings under Steinberg appear but NONE are selectable!
You have to clear the search field first then manually scroll to the Steinberg list in order to open the subcategories and choose an insert.

Using Cubase Pro 8 64 bit on Windows 7 64bit Ultimate.


I can reproduce it on Wind 8.1 and on Mac.