The "Re-enable menu simulations" mod setting doesn't seem to be working. I've had a custom K2 background in place for a while, and it stays there while a savegame is loading (expected). I upgraded to Factorio 1.1.5 and K2 1.0.12, and the K2 background is visible on the main menu, but the whole screen goes black when loading a save. So, I tried to revert to standard Factorio background by changing the K2 startup setting to re-enable menu simulations. When I do this, the standard Factorio background appears, with none of the new menu simulations. BTW, I think the black screen thing may be a Linux issue, but that's another story.

However, this post https://forums.factorio.com/viewtopic.php?f=23&t=92624 indicates that the mod is breaking the menu simulation. Is this fixable?

Tested on Factorio 1.1.5 K2 1.0.13
Probably ur other mods installed that make something look better in ur modpack

Nope, I tried the same thing as you, Factorio 1.1.5, and K2 1.0.13, and i don't get the simulations. I then tried with NO mods, and got the same thing. So it must be something with Linux. I don't have access to a windows machine to find out. Thanks for your reply.

Oh I'm sorry but I can't fix something that beheve differently on different operating systems, this shouldn't concern mods should be a base game bug :(
But I find very difficult that this is a base game bug, because is really a list(table) of elements that is empty or not..