Even in the latest 9.0.0.9 version: when opening 2 or more folder tabs (with double click) in "ecplorer" view, there's a certain probability that the path names shown on the tabs at some point in time get synchronized and show the same paths even if the real "working directory" is (correctly) different. This can happen during normal use of the lister (folder changes, toggling between the tabs, file operations etc.).
That phenomenon accompanies me since my first contact with Directory Opus v8 and it's still here and well alive! Maybe the developers one day give this bug some attention...
Andreas