Solved

Practice lap error

What did you try to do?
I clicked "Try Setup", the progress bar showed as complete, then there was the loading, all standard. But the loading was taking way too long, appearing and going away all the time, as if it finished, but then starded loading again (I assume it was a connection problem). So I reloaded the page, and then, the progress and loading happened again.

What happened instead?
But then, the lap was completely broken, 0:00.00 lap time, 100% tyre wear, 0.0 fuel consumption and 0 mm of rain (the track was at 1.4 mm at the time)

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?
PC

What operating system is your PC?
Antix Linux

Which browser did you experience the problem in?
Firefox

Can the bug be reproduced?
I didn't try it again, but I think so, yes.

Additional comments:
If needed, I can provide 2 pictures I took, even although I now realised I forgot to screenshot the water level of another lap that showed correctly.

Oh, there was no need. It was for a race the day before yesterday, I just forgot to post about it. Also, it didn't hurt my race, I managed to set my strategy just fine. I'm just worried it could happen again (to me or to someone else), so I'm reporting it. Well, thanks for the help anyways!