Tabs in Listers after Restart

I have a strange problem. I always have Dual Vertical Listers open with a set of Tabs under each pointing to a bunch of Folders. They are just random folders, not a fixed set.

My PC keeps crashing lately. When I restart Opus after a crash, I see all the Tabs I had open before the crash, except on the Left hand lister, only the Tab that was active before the crash shows the Folder it was displaying. For all the other tabs the folder has been changed to "This PC". I have no clue which directory they were linked to. The correct number of tabs appears, and their order looks correct, it's just that all but one point now to "This PC".

Is this a bug or an incorrect setting?

Please note, my folders are often on SD cards or USB drives, perhaps this is causing Opus to get confused somehow?

Can you reproduce that behavior when restarting Opus normally? Then it might be caused by a setting or script. If not, I'd say it's the collateral damage of the system crash. Opus simply couldn't save its state data before it got killed.