[off the wall]

Originally Posted by Micks_Mix

In the reademe Avid says that there are some changes in the dialog (shortcuts) for BS compatibility.

However, it would be interesting if there is someone on Mojave and could test the browsing issue. Maybe this is just a side effect of the changes that was not found in test.
Expanding folders seems to work (good workaround), only double clicking on a folder does not work anymore. And I have the "open twice" issue as well.

On Mojave, double clicking does not open folders in the import dialog. Command O does though. I also have to hit Open a second time to complete the import. Something is broken there...