Problem All of a sudden alone as a "Ghost" in Multiplayer Race

We were having a 2h Multiplayer race with GT4s last night in Spa.

With like 20mins to go my system all of a sudden told me that I'm leading (actually I was 11th) and all the other cars were gone around me. So I was like a Ghost somehow!
As we were on Discord, the others told me that I'm gone from their list as well...

So I still continued and finished the race, and in the final classification I was surprisingly back there in the correct 11th spot. The guy that thought he was 11th dropped to 12th and so on

Any idea what happened and if there is something I could check or do on my end?

 

Maybe it was only a glitch, will be difficult to reproduce.

Perhaps a Log file can help

 

Thanks for your response.
Which log file do I need to look for and do you mean I shall attach it here?

Sorry, rather new here...

 

Search for the one with the correct time stamp.

 

This would be the file from last night.
Obviously no idea what I should look for in it... Really appreciate your help!

 

THX, I made a bug report

 

Do you have an idea how long it may take to get some feedback on the LOG file?
I appreciate all the feedback I can get obviously, but would prefer to get something sooner then later as I'm somewhat afraid it may happen again at one of the next races!
Thanks Peter