what happend to the refueling?

[Lechu]

I have returned to the Kerbal after a three month pause, and it seems I cannot refuel my crafts any more.  Where there some changes in the meantime?

I right click of both tanks of the docked crafts, click "in" one the empty one, and nothing  happens. Sometimes it helps to enable crossfeed on both docking rings (I don't remember having to do it three month ago), and sometimes it don't. There are tanks that seem impossible to refuel. What's happened?

[Terensky]

It's a bug introduced in 1.10:

https://bugs.kerbalspaceprogram.com/issues/25881

Possible temporary fixes: timewarp or switch to another vessel, then back.

[Reactordrone]

If you have any other part right clicked you won't be able to transfer fuel so make sure you don't have any science instruments , engine or command pods open.

[king of nowhere]

also saving and reloading generally fixes it

[Snark]

Other things that can stop you from being able to transfer fuel:

• If you're in a career game, and you haven't upgraded the R&D facility to at least level 2
• If you've got the "Fuel transfer obeys crosfeed rules" option turned on, and there's some "No Fuel Crossfeed" part in the path between the two parts you're trying to exchange fuel.

[Lechu]

On 8/7/2020 at 3:20 PM, Terensky said:

It's a bug introduced in 1.10:

Damn. Just as I was going to start using Mun' refuel  station. With a row of crafts waiting for just produced fuel. It makes the game almost unplayable (rage quits and stalks off).