Solved

Estimated fuel for pits inaccurate until DRS

If you look at the car pit page, it estimates the amount of laps you will have once pitted. This shows 100 laps or so until DRS is activated.

Then you have to adjust it for it to correct itself

Playing on iOS

As extra information

This can be duplicated every race and is both the top menu splash out window and the driver menu at the bottom.

I’ll add a screenshot when I remember :)

We are aware of this issue, thanks for reporting it!