Basically shows what I described, the heating element on the bimetal strip contact. Sloshing the fuel in cornering will only give momentary power to the unit, not long enough to heat the strip to make contact so stopping the light from flashing. If the level stays low for long enough it will allow the strip to heat enough to bend and make contact, illuminating the low fuel light.
Saab 9-5 2.3t Vector Auto Estate Stage 1
Saab 9-3 2.0 SE Turbo Convertible
'81 TR7 DHC