[Maya 2018] Multi-Cut tool moving geometry after cutting!?

Ricky

https://www.youtube.com/watch?v=ziI6EGH7-Jw

I made the above recording because trying to explain it was a bitch. 

Move edges into place > cut the mesh as shown, and then the end result moves the edges randomly away again. It is also not possible to undo.

- Reset Multi-Cut tool settings
- Reinstalled Maya 2018
- Newest GPU drivers
- Smacked my head repeatedly on the desk.

Nothing seems to be fixing it, please help!


P.S.
Saved file out as .ma for Maya 2016, and it happens on that too. 
Only way I have found to fix it is to let it do the stupid bug, then add in two more vertical lines in the place I wanted them, then cut into the mesh. With this, it works. 

sprunghunt

did you delete the history on the object?

Ricky

Yeah deleted history, froze transformations. I managed to fix this specific issue by letting it bug, then redrawing new lines in where I wanted them and repeating the operation. This fixed it, but its not a fix overall as this isn't the first time Maya has done this to me, and its not always something noticeable when it does it, making it a huge issue in modelling to me. 

eXeshechka

try to turn off smooth mesh preview

Ricky

Tried this too, originally thought that's what it may have been  

throttlekitty

Ricky said:

Tried this too, originally thought that's what it may have been  

Same thought here, especially since the verts go back to their original positions. You said it's not possible to undo- why is that or what happens?

I can't think of anything that doesn't involve having history, a blendshape, unfrozen transforms or another mesh as input. Except maybe if this was an extremely large model and you've set maya to work in feet.

Can you share the scene, or at least an obj of this geometry?

onionhead_o

you probably have edge flow turned on. 

EDIT: just saw the video. disregard my comment