A new bug has been discovered in Rhino 9 SR0 (2025-11-18, Rhino WIP 9.0.25322.06305) in Today's update,that causes all objects in the Rhino viewport to disappear , as if the file contained no geometry at all. [Screenshot 2025-11-19 090015] After 3 Minutes :slight_smile [Screenshot 2025-11-19 09…

I just experienced this! I have been creating tangent circles to the bunch of lines and, suddenly, everything is gone. Not a single curve, point or surface (there were plenty of them). I lost everything…. terrifying. It wasn’t 3, but 30 minutes, but still… On the side note: recovery from autosave…

@Piotr Do you have any recollection of the things you have been doing? Just drawing lines and circles, or is there more? If this happens again, pls run CommandHistory and post the results. Did you experience this in the latest WIP? the result of _SystemInfo is highly appreciated. Also: did things …

Hi Gijs Some info: ▶ Summary I was in the middle of the command when it happened. I can’t provide any CommandHistory as the system crashed (luckily, which led to autosave & recover). Yes, I have the latest WiP.

Thanks, [image] Piotr: in the middle of the command By any change do you know which? or maybe a couple candidates? [image] Piotr: the system crashed did any crash report come up? these are helpful to get as well.

[image] Piotr: I have been creating tangent circles to the bunch of lines No crash report was created. or at least, there is nothing I can find.

Ok. We think we know what’s going on. An outage with GitHub yesterday led to us releasing the wrong WIP. We are trying to get a good one out now.

Done - there is a new WIP up now.

Btw - if this happens in the command history is the most useful thing to post.

@andy [image] - [Screenshot 2025-11-20 064306] The bug still persists: if you edit a Box(PolySurface) usingSubObject(Control Point)selection and then perform an Undo, Rhino will hang and freeze.(Crash)

Thank you! That’s a different bug, but yes - I’ll get that fixed and get a new build to you asap.

Rhino 9 SR0 WIP: All Objects Disappear

Serengeti (Rhino WIP)

andy (Andrew le Bihan) November 20, 2025, 9:29am 20

Thank you. I have it repeated and I’m working on it

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