inconsistent "linearly dependent recipes" detection

[durandal42]

Problem Description

I have a factory plan to make one rocket silo (per minute, but I don't really care about the rate) on Vulcanus, just as a checklist of things I need to make in order to build a silo there.

Matrix mode is overkill for this, but I have it on by default and expect it to Just Work. However, there is some weirdness going on that I don't fully understand.

Reproduction

If I add recipes in the order shown in the attached screenshots (and choose stone as the unrestricted item), everything does work... temporarily.

If I then toggle matrix mode off and back on, the same factory plan now insists that there are linearly dependent recipes, offering me a chance to pick Processing Units or the Rocket Silo itself.

Neither selection is useful:
PU's gives me a solution with many ingredients demanded that the chosen recipes do provide:

Silo is the target product so allowing it to be unrestricted zeros out the entire factory:

Sometimes reordering recipes can trigger this behavior, but I haven't been able to reproduce this as cleanly.

[durandal42]

Reordering the top two recipes in this factory triggers "linearly dependent recipes" which I believe Should Never give a different answer depending on recipe order.

[durandal42]

Moving the Rocket Fuel recipe of this partially-built plan to the bottom also triggers "linearly dependent recipes":

Is there any reason this behavior is intended to be different depending on recipe order?

[ClaudeMetz]

Thanks for the reports. I didn't write the matrix solver myself, so I'm of limited use in debugging things like this. The same setup should definitely result in the same answers from the mod though, of course. I'll see what I can figure out.