I start the command, select two lines, hit right mouse button, get my surface, and yet that DOS command line thing looks like this:
When this happens, it doesn’t accept any more input or anything else. I need to hit Esc to get back normal selection.
Why has this happened? I think it’s a recent thing, because I haven’t reacted to it before and it’s annoying as hell.
My Rhino version is 7 SR6.
That will show as long as the dialog is up, but should go away when you exit the dialog.
-Pascal
I’m in Windows. I thought only Mac had proper dialogs?
This has been the behavior since at least V5.
I’ve only been using Rhino for two years now, I think, and I haven’t touched it for a few months… but I suspect having an extra right-click to complete the command would have been the first bug I’d report on this forum… 
(This feels similar too how ExtendCrv continues after completion, but ExtendSrf does not. But at least ExtendCrv tells you it’s continuing. Frankly, it’s a UI consistency nightmare!)
No, you get a preview of that surface. There are still options on the screen to choose from. You need to hit Enter to accept those options and actually create the surface.
Ah. I think I can explain what confused me now:
The dialog never appeared for me when I made the thread.
Today, when I do the same, I get the dialog @Pascal mentioned.
Not sure what could have made the dialog not appear… I don’t think I was running two monitors at the time (I’m on a single 32-inch while at the home office).
If you run a command with a hyphen preceding the name of the command then the dialog box does not appear.