Hi all,
thanks for your input, which made me find out what happened. After dimensioning something in the middle of a floorplan and moving the offset points outside of the plan manually (so that the extension lines wouldn't cut through the plan) LO somehow took the distance between connection point and offset point as default. Then, when dimensioning something along the outside of the plan, this new default distance (which was quite long) led to inverting the extension line.
I wish one could turn off the extension lines completely and have custom made start and end arrows on the dimension lines, then I wouldn't have to bother with extension lines cutting through the plan and need to shorten them manually.
Regards
Mikar