Bug: 'Fake' gearbox issue makes player car 3 seconds/lap slower

This occurred in 2 of the first 3 races of MyTeam, if that continues, the game is completely unplayable with faults on.

I documented the last occurrence; after pitting in Japan, immediately the engineer mentions a potential issue. Looking at the car screen/temp screen reveals nothing.  The engineer ~10seconds later says along the lines of "It seems we have a gearbox issue, expect skipping gears". 
From this point onwards no gear issues show up, neither in the MFD nor in performance, however, the car becomes unbelievably slow. Asking the engineer they just say;  "Everything looks good."
While it may be slightly power related, most of the lost performance seems to come from understeer.

And it's not just a little  bit of understeer either, race director supports this. 
Old mediums; 1:32.8 -  1:33.0.
 New soft + issue (minus outlap) 1:35.1-1:35.6

Mode: MyTeam
Steps to reproduce: Drive with faults on ( incl. severe issues possible) until engineer reports a gearbox issue.  If this issue doesn't show up in MFD, congratulations; Drive around as normal and find your car 3-5 seconds slower than normal.

I feel like I've seen this issue on F1 23 career. Shame to see it still here.
I would like to hear whether this issue will be addressed.
Thank you.