Hi pascal,
No plug-ins at all. This issue happened to a friend of mine who recently purchased Rhinoceros 5 and today I got the same problem. So there is definitely a problem but I have no idea how to track this. It happened to me all of sudden. As you can see in the second image, there is no complex geometry involved. I started with a simple curve and it started to behave like that, and to test more, I also made boxes(no problem)and lastly the long curve which caused the same problem.
I understand it might hard to see what is the exact problem here but is there a way I can track this problem?
And rename it to something like Scheme: Default_OLD. This assumes you are running 64 bit of course- if not, find the key for X86, which is on about the same path.
Now start Rhino- (it will make a new Scheme: Default)… does that behave any differently?
I didn’t try that but so far Rhinoceros doesn’t have the same issue. It seems to me that It’s a random behavior. Maybe what Kelvin said is correct… I will track this with my friend we both are Chinese…
By the say, my friend lately told me that he changed Ctrl+C to a different function in Rhino (I don’t understand how that makes any difference but I will ask details)