LOW FUEL deliberately wipes the Miles Remaining.
They designed it that way because Miles Remaining is a guess or at best a guesstimate.
They have no idea how yer gonna ride for the next 30/40/50 miles.
You could be using Eco mode and riding dead smooth but a 20Mph headwind would offset all that and then some.
At 35 miles remaining you get LOW FUEL which actually means LESS THAN 35 MILES REMAINING,..... FIND GAS,.... NOW!

I personally have managed 47 miles after LOW FUEL but I put 22.2 litres into my 22 litre tank.
Since then I rarely get more than 10 miles into LOW FUEL.
What I would like to see would to have LOW FUEL not wipe the gear display.
There is no need for it take the whole damned screen!