I have a large monitor for Logos so I show several panes with many tabs in each. I was just trying to highlight a scripture in a Bible pane, dragging the cursor over a text when BAM. Logos changed all the arrangement of my panes! I could go back to the last layout, but I've changed some things since then. So I'll have to be content with wasting time to drag one tab after another back into another arrangement.
This is not the first time this has happened and it seems to happen more often in Logos 8 than previous versions. It would be reasonable to have the ability to undo these kinds of errors.