Fuel amount selection should never reset. A minor annoyance, but annoyance nonetheless
Please instruct your programmers to rectify this
When I select my fuel amount, it should stay selected forever. Just because I’ve researched some engine part, doesn’t mean I suddenly want to take off with 8 min of fuel : )
The thing about fuel loads on aircraft IRL is that you start with each tank either full or empty - that is standard procedure. And of course for wing tanks they must be loaded symmetrically.
So your options are limited to a fixed number of possible values.
Of course there’s so much else about the game that is not particularly realistic, so you might well ask why bother with this!!