Stellaris

It must be very frustrating to be a Stellaris modder. Unfixable, vanilla/DLC desyncs in multiplayer are also another big issue in this title and (to a lesser extent now) with Hearts of Iron IV (similar engine).

CK3 and (especially) Victoria 3 are in a much better state when it comes to desyncs. I wonder if it's laziness to identify issues or just older versions of the engine not performing or getting improvements backported.

In Stellaris, it's so bad that the mod developers work with Paradox to fix what they can, but with the desync logs being so vague, it's usually very hard to identify the specific issues causing the mismatch between players.