Editor preferences not saved on relaunch

My settings in “Editor preferences” are not saved, on every relaunch one needs to go all over again, what’s even worse, to overcome this I tried to save my setting to file but figured out that only small subset of settings can be imported back.

I googled out this issue and it looks this problem is present from long time ago.
for example:

Yep. both (waiting review) and (declined, but still valid) haven’t been integrated into the engine.