Picking End Control Point First Moves Entire Line

Hello. When I select a curve and the control points turn on automatically, it works perfectly for editing all but the end control points. If I edit a mid-control point the line deselects and I can then grab any one I want. But if I got for a control point at the ends first, I have to click it twice otherwise the whole line gets dragged around. Any tips?

I’d guess that’s the default behaviour? Same with Rhino 8 macOS.

Only when selecting a curve, and then immediately selecting the 1st CV (Rhino unfortunately does not graphically reveal what is the 1st CV of a curve like in some other software), the entire curve is transformed, not the CV.

When I select any other CV but the 1st one, the tooltip prompts “Point”. When I select the 1st CV, the tooltip prompts “End” (I only have “Osnap” and “Gumball” selected in “Modeling aids > Cursor tool tips”).

When you select the 1st CV with SHIFT + CTRL (command for macOS) pressed (sub-object selection), then you can also transform the 1st CV directly after selecting a curve (then, also the tooltip prompts “Point”, not “End”).

Hi Adam -

I’ve tried that in both my customized scheme and a factory-default scheme and am not seeing that behavior here.
2025-11-20 MoveFirstCP

-wim

You’re clicking on the point first, and transform it in a 2nd step; that’s different.

Its a different behavior than Rhino 7

Hej -

In a complete new scheme to really ensure everything is at default settings:
2025-11-21 - MoveFirstCV

-wim

Hi Wim,

I managed to reproduce the OP’s move behaviour. I was clicking randomly on the curve or individual points and seeing the behaviour you illustrate until suddenly I dragged and end point and the whole curve moved. Thereafter it did so repeatedly until it didn’t and it went back to behaving like yours. Very frustratingly I can’t identify anything to indicate what causes this.

I can’t reproduce it at will, but I have done it three times, so there is definitely an issue there. Sorry I can’t point to a reason.

Regards
Jeremy

Been playing around more and now I’m seeing some of the variable behavior, works once and then doesn’t work. I also noticed that it happens on control points near the curve, not just on the ends. Could it be that the control points are ‘behind’ the curve. So sometimes you just get lucky and miss the curve when selecting the control point.

I went back to Rhino 7 and couldn’t replicate the issue at all.