Cannot drag & drop in directory opus 13.13

Like the title say, I can't drag & drop files anymore either in the same pane or between two panes. (right click or left click)

I always get the :no_entry_sign: when trying.

Any idea on what's causing this?

I've been a directory opus user since the days of OS/2 and this has never happened

regards

Have you rebooted since the problem started?

Is drag & drop working between File Explorer windows?

Does it matter which folders you are dragging from/to?