Deleting objects & Undo not working

Rhino
1

Rhino 8: Version 8 (8.17.25066.07002, 2025-03-07)
iMac 24 M1
OS: Sequoia 15.3.2

Hi, please could anyone help.

I’m getting what appears to be a bug as follows:

  1. I created several curves.
  2. I created a box.
  3. I decided to delete the box but it also deletes all of the unrelated curves drawn at Step 1, which I need to keep. (Only the box is highlighted when I try to delete it, nothing is grouped.)
  4. Also when I toggle back and forth to delete just the box using Cmd Z it deletes all of the curves with the box. It has forgotten all of the individual steps taken to create the curves.

I look forward to your help.
Thanks in advance.

2

Hi Chowker -
I’m not able to reproduce that behavior here.
Please run the Rhino SystemInfo command and copy-paste its output here.
-wim

3

Hi

Thanks for getting back to me, please see attached.

Chris

(attachments)

SystemInfo.txt (4.93 KB)

4

i just guess that you used the curves and extruded it from there. you might have the option Delete Input checked, which would delete the curves right after you extruded it.

5

Thanks.

In fact I hadn’t got that checked as I like to keep all curves used for extrusions and save them to a specific layer, so that I can hide them, but use them again if necessary.

I’m wondering if the file had got corrupted.

6

most likely a bug, specifically when the undo gets messed up. there were/are quite some issues with the undo generally but that things get deleted and are not retrievable is rather new.

i dont think that this could be a sign of a corrupted file, at least not from a hardware perspective i believe

7

Hi Chris -

Does that mean that this is not something you can reproduce in a new file from a factory-default template?
-wim