Crash game inverted fuel tank after undo

[Christopher MR 1]

Fresh install, unmodded, new sandbox game, version 1.11.0.3045 (WindowsPlayer x64) en-us / 1.6.0 Breaking Ground.

Game crashes instantly after the following occurs while within either the VAB or the SPH:
- New vehicle.
- Select Mk1 Command Pod to place it as origin component.
- Attach a TD-12 Decoupler to the bottom node of the pod.
- Attach a C7 Brand Adapter - 2.5m to 1.25m fuel tank in default orientation to the bottom node of the decoupler.
- Click on the placed fuel tank to "hold" it.
- Press Ctrl-Z to replace the fuel tank.
- Flip the held fuel tank upside down by tapping the W key twice.
- Place the held fuel tank on the bottom node of the replaced fuel tank.

This has also occured with the Kerbodyne ADTP-2-3 fuel tank. I have not tried every fuel tank, nor every game mode besides sandbox.

[Chemp 310]

Hello and welcome to the forum!

Same setup here, but with Making History instead of Braking Ground.

I've reproduced the issue. Although my game won't crash, it throws a Stack Overflow Exception. Flipping the tank is not necessary, and it also happens with other tanks and structural parts. Have you considered filing a bug report?