Possible glitch on City/Highway % bar

[KC8RXQ]

I've tried twice to adjust the slide bar from the 50/50 setting and each time I do the screen around that area goes blank. There wasn't an indication of any type of screen adjustment, just blank. Should I try something else?

Ed/KC8RXQ

[RobertV]

How are you attempting to add the fuel-up?
Main site- fuelly.com
Fuelly Mobile- m.fuelly.com
GasTracker iOS App?

Can you get a screenshot when this happens?