Thanks @Hoo - I'll await version 1.05 in that case.
I don't think the controller settings are related to my issue, it's a little more involved than that:
I'm talking about the feedback I get through my seat, driven by Simcommander SimVibe (which uses the telemetry output from the game). Last year SimCommander / SimVibe never adopted the new F1 2018 UDP structure, so I had to write my own UDP converter app for F1 2018, to convert the new structure back to the legacy structure, so I could run the latest UDP structure to drive my F1 wheel replicas which use SliMaxManager and the latest UDP structure, see here:
whilst also running SimVibe with the legacy structure simultaneously (using my converter app and the Sim Race Proxy Server to forward the UDP output from the game to multiple ports)
So I've recently updated my converter app for F1 2019, but yeah I'm seeing this issue where not all the effects are coming through. Strange because the car telemetry packet hasn't changed this year. Interestingly gear shifts are coming through just fine, I can feel the seat move when I shift. But revs, and rumble strips etc are not coming through at all. The seat vibration feels as though the car is idle in the garage. As I mentioned in my original post though, I think when the computer has control it is working. Which is what game me the hunch that maybe it's an issue with the new yourTelemetry feature.