I've seen this on 6.7.0, at least both rc5 and rc6, and I believe one of the earlier rc's, but 5 and 6 for sure.
If I go to the docker page, and hover over the icon that shows state, instead of popping up the menu of options, it shows the "rearrange tool"
- Tried with white theme, black theme, and azure theme
- Tried with Chrome, Safari, and Firefox
- Tried in both basic and advanced view