Experiencing problems with the dimension tool since upgrading to Corel Draw X6 at this end, which hasn't been resolved with the updates.
I work in mm. The system doesn't remember the default settings if I change my preferences for it to measure in mm via the customisation window or the toolbox as it used to in previous versions. When I open the program again or start a new document, the measurement default keeps changing back to ["] (inches). Sometimes, it will jump back to inches after I change the default to mm when I'm working on the same document.
Same problem seems to be happening with the other units of measure available as well.
Current workaround - the only time it seems to remember my settings is if I change the default to mm and then save a document.
I can fwd a video screen capture which shows the problem if that would help.