Crossfeed still does not stop at decouplers for MonoPropellant and XenonGas?

[Gordon Dry]

This old thing:

Building a custom mun lander setup with a descent stage and an ascent stage on top of it only gives proper dV readouts (KER, MJ, doesn't matter) with LF+Ox, but not if both engines use MonoPropellant.
This is an old issue and never has been fixed.

As soon as the fuel is MP (or XenonGas) there is global crossfeed enabled. This is a bummer. Is there a mod that breaks the "global crossfeed rule"?

[Gotmachine]

MonoPropellant and XenonGas are both defined with flowMode = STAGE_PRIORITY_FLOW, which mean they ignore "no crossfeed" parts, it has always been like that.
If you want them to behave like LF or Ox, you can MM patch the resource definitions to use STACK_PRIORITY_SEARCH

Edited December 14, 2021 by Gotmachine