oh now, that's great! I thought that I got a workaround working (it worked initially) but now after opening the file again... now MY WORKAROUND "parallel constraint" also locks up the line in a way that's clearly wrong! :( It's one of these strange bugs where storing/loading is changing data somewhere now, isn't it? Ok, I guess I know now why this bug didn't get fixed until now. The weird thing is that I can "fix" this issue by removing a neighboring constraint and adding the same type back (so it shouldn't change anything) but it do! Ahhhhhhhhhh!
This is bad, my dudes, pretty bad. Not as bad as dealing with dumb, demanding customers with inflated egos, but still, pretty annoying.
I'm considering making some funds available to put a bounty on this "FreeCAD, parallel constraint locks up geometry THE WRONG WAY!" -bug but I've no idea how much would be an appropriate amount. The parallel constraint is such a basic feature that it not working smoothly is a deal-breaker and we can't have that! If anyone important is reading this who can help get FreeCAD the Cern-treatment like they did with KiCad, please help us out! The impact (on general innovation) of a tool like FreeCAD or KiCad shouldn't be underestimated! I have no data on this but I bet it's yuuuge! Just think of all the projects that are empowered to be shared, data AND tool-chain, the way it's normal in the (open source) software world... but for physical things! (If you're not excited about helping mankind to innovate, regardless of access to expensive design-tools, then, I'm afraid, you have no soul). Just kidding but try to get excited for things money can't buy, ok?