XBOX Series X, last update (11/09).
RPM Color Led of Logitec G923 not working after Update 12 and XBOX 11/09 update.
RPM leds works on other games like ACC.
Other attempts:
Game mode: career or single free game,
True force on or off, no changes.
XBOX restarted after update.
Game closed and reopened.
Devices disconnected and reconnected after reboot.
My RPM Lights have stopped working on my Logitech G923 since update
The RPM lights don’t work on my G PRO wheel anymore
I have had the same issue, I use the wheel on a very few games, but this one was probably my favourite, but Ive lost the LED shift lights. I was using it the night before the update and it was fine, then I let the update happen overnight. I thought it was the wheel so I unplugged, shut off the console. Restarted everything, reconnected and still no go. I’m not happy with it. But hopefully it’s resolved soon
Yo hice exactamente lo mismo que tú 
They already are aware of this bug, you can find it on the very bottom of the release notes:
Not too fast. November is enough too.
It also happens with F1 and FH5? The rpm lights don’t come out