Macenzie

At the moment, docking ports are not acting like staging. Which is utterly crazy.

How they released this game without BASIC mechanics locked down and working is beyond me. You have to be able to rely on the mechanics working properly when you build a mission, because what's the point if something random and unaccounted for just ruins everything~

There appear to be other parts that trigger this too, I had it happen with procedural farings I've tested it and found the same issue, removed the landing struts and the problem went away. I believe I've tested the small and medium legs so far

Yeah, I've been landing on the Mun and Mimnus very carefully on my engine bell

It seems like other items can do the same thing, I've found the procedural farings to do the same.

It looks like a bug that attaching certain parts to tanks make them crossfeed. Procedural farings seem to do that too.

So after a successful Mun flight (having to avoid using landing legs), I decided to move on to a Mimnus mission. After landing and dusting off, I fluffed the landing back on Kerbal so I went to reload... nothing happened. I went to the menu and all my quick saves after taking off were not available. at number #62 quicksave. Saving a manual file wouldn't work either and if I overwrote a quick save it would vanish. Also the space bar stopped working for staging.... I'm not sure whether it was the time of the game or something happening during the flight but something corrupted the playthrough, making saves unrecoverable. Sorry mods, meant to put this into bug reports!

As Sea_Kerman says, it's most likely the landing struts causing the tank to drain.

Any vehicle uncoupled from a mothership will have no connection to KSP until you save and reload. This is pretty easily replicated.

Just to add, fairing do this too. If a fairing is touching a tank, it will crossfeed down to the bottom too.

You sir are a genius and a scholar. So I removed the fareing above he upper stage tank and it stopped feeding through to the lower engines. I then removed the landing legs from my lander and the lower engine stopped taking fuel from the lander... This needs fixing ASAP, it makes fareings and landing legs useless!

I do have a lander with legs, however the tank sending the fuel in my design isn't the one with legs attached. This only started happening when I added a fairing further up (to actually cover my lander).

Definitely had issue 1 and 2. 1. It seems that sometimes upper stage tanks just feed into the lower stage tanks for no reason even through non cross feed parts 2. I too was doing an Apollo style mission and I had the same happen, the SAS just made the ship spin and spin for no reason. They REALLY need to get these basic things fixed, if you build everything correctly you HAVE to be able to rely on the fact the mechanics will work consistanlty. Because otherwise what is the point in playing?

I'm getting super frustrated by the game mechanics being so buggy it appears to be random what will screw up my mission next. Right now I have my damn rocket feeding upper stage fuel to my lower stage engines through a decoupler that has crossfeed off. What is the point if you can't trust the BASIC staging features to work every time...

I redesigned the craft, removing the fairing hiding the lander and it stopped the spinning issue. Seems certain configurations cause phantom parts.