I'm having some trouble with the dimension tool.
Every time I start a sketch and try to dimension it, a 'lock' or 'unlock' right click mouse pointer shows up.
Regardless of wether I right click or not, it gives me the option to dimension the sketch, then I am unable to do anything but delete the sketch. I can't create dimension relations between two circles or a line and a circle for example. I can only double click one sketch element and add a dimension to it.
I have no selection filtering enabled as you can see in the last image.