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Bug #26957

Staging on spacecraft doesn't work correctly after undocking/detaching a vessel and switching to it

Added by Vernor_von_Braun 22 days ago. Updated 18 days ago.

Status:
Need More Info
Severity:
Low
Assignee:
Category:
Staging
Target version:
-
Start date:
01/02/2021
% Done:

0%

Version:
Platform:
Windows
Expansion:
Core Game
Language:
English (US)
Mod Related:
No
Votes:
Arrow u r green
Arrow d r red

Description

When I decouple or undock a smaller spacecraft from the main vessel and switch to it, the staging doesn't work properly. Instead of the first stage activating when I press the spacebar, the second stage activates. This usually leads to something (like an engine and fuel) being detached before it's supposed to.
For me, this has happened when undocking a lander from an interplanetary or translunar tug or deploying a satellite from another vessel, since that's when I would be detaching something and then switching to it.
This has been an issue for as long as I can remember.

Kerbal Space Program 2021-01-02 19-35-24_Trim_Trim.mp4 (6.99 MB) Kerbal Space Program 2021-01-02 19-35-24_Trim_Trim.mp4 Vernor_von_Braun, 01/03/2021 01:46 AM
Jove_s Ardor.craft (592 KB) Jove_s Ardor.craft Vernor_von_Braun, 01/06/2021 12:55 AM

History

#2 Updated by Vernor_von_Braun 21 days ago

I've attached a video of what I'm talking about.

#3 Updated by Vernor_von_Braun 21 days ago

  • Subject changed from Staging on spacecraft doesn't work correctly after undocking/detaching and switching to it to Staging on spacecraft doesn't work correctly after undocking/detaching a vessel and switching to it

#4 Updated by Vernor_von_Braun 21 days ago

  • Version changed from 1.10.0 to 1.11.0

#5 Updated by victorr 19 days ago

  • Status changed from New to Need More Info
  • Assignee set to victorr

We are unable to reproduce the issue. My thinking is that those engines on the smaller vessel were active already somehow. Could you provide a bit more info about your setup, mods you're running, version. Maybe reproduction steps, or even better, a saved game? Thanks.

#6 Updated by Vernor_von_Braun 18 days ago

victorr wrote:

We are unable to reproduce the issue. My thinking is that those engines on the smaller vessel were active already somehow. Could you provide a bit more info about your setup, mods you're running, version. Maybe reproduction steps, or even better, a saved game? Thanks.

The engines have not been activated up to that point. I regrettably had to cut out a lot of the video I had initially recorded in order for it to be small enough to upload here. What was left out was me undocking the lander from the transfer module.
I'm using version 1.11.0, without any mods, and idk what you mean by setup.
Some info that might help is that I place all the stages for my lander after all the other stages, even parachutes on the command module.
I've added the craft file in question. To replicate the bug, get the thing into orbit, decouple the lander from everything else, switch to it, and then hit spacebar. That's how I got a recording of it. Also make sure there's a kerbal inside do you can control it.

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