For some reason I could not edit my prior post.
Bosch
First, on my U4 I only had Bosch scheduled (Riviera was not scheduled), and the recording was incomplete. The recording length was 1 hour 59 minutes (on the U4 I have pre padding of 20 minutes and post of 40 minutes), so I am assuming that the timer was not updated - the recording started at 22:45.
On the T2, Bosch started recording at 23:30 (with same pre and post padding), and the full program was recorded.
I suspect that it did not update for the U4 because there were conflicting timers - I recall having to cull some timers around midnight on Thursday.
Riviera
This is where things get weird. The details of the recordings are below (only included the *.ts files):
20190912 2010 - SBS ONE HD - Riviera - Series 2, Episode 5.ts ["un-adjusted start time - end missing; length 1 hour 59 minutes]
20190912 2105 - SBS ONE - Riviera - Series 2, Episode 5.ts[only went for 15 minutes][/b
20190912 2105 - SBS ONE HD - Riviera - Series 2, Episode 5.ts [only recorded 25 minutes]
20190912 2110 - SBS ONE HD - Riviera - Series 2, Episode 6.ts [went for 2 hours and 50 minutes, has both episodes]
20190912 2205 - SBS ONE - Riviera - Series 2, Episode 6.ts [only went for 15 minutes]
No idea why there are two recordings on SBS One rather than SBS One HD or why they were truncated.
Ian