Unresolved

Fuel

What did you try to do?
Pit

What happened instead?
When i pitted for think it was 13 or 14 laps of fuel the fuel went down to 11 laps then few laps later went back up to where it should be

Did the problem happen while using wi-fi, mobile data, or both?
Wi-fi

Did the bug happen in the app, on PC, or both?
App

What is the model of your device?
Samsung S8

What is the operating system?
Android

What is the version number of the operating system?
8.0.0

Can the bug be reproduced?
It happens almost every race it's annoying and makes me think I've underfuelled

Additional comments:

Did the amount in litres change? Or did the projection for how long current load last changed?
Second is natural thing when driving in and out lap with Max push level. Tho a change of more than 1 lap seems too much. 

How long the current load lasted changed

This is a far more normal phenomenon than most of us imagine. 

Upon changing my racing habits, where now I use my PL's to their full potential and not just to manage tire temp. 

This strategy causes a lot of fluctuations in my fuel management.  Fuel needed to complete the scheduled stint either goes up or down. Of course we all know this is largely cause by your PL management and/or track characteristics at the time. I then do what most of us do; manage on the fly. 

I can tell you I don't race to save fuel.  

I’ve noticed that in quick races the notice of a driver running out of fuel, yet they stil went around a couple more corners to win the race