have "dual vertical" view... have some tabs open in left window.... now go to some folder and press CTRL+F, change search window to "duplicate files".. search for them... now you are in "duplicate files" tab and you cant switch to any other opened tab, even when you add new one. It always switch back to "duplicate files". when you close the search dialog by CTRL+F you can then switch to another tab from "duplicate files" tab.
Confirmed. We'll get it fixed. Thanks for reporting it!
This has been fixed for the next beta.