Seeking catchup streams not possible if server uses redirects

I have one set of streams where there are issues. I can play the catchup stream from the start no problem, or the live stream no problem and there is no issue until I switch from one to the other.

Here is a log when started with the catchup stream (working): https://gist.github.com/phunkyfish/7931b21c55fa4633b603a3d147584a05

Here is a log when started with the live stream (working): https://gist.github.com/phunkyfish/04a48407e9f5bbccffe17fa7953770fd

Finally here is the log that freezes when the switch from catchup (working) to live (freezing) occurs:
https://gist.github.com/phunkyfish/fd8f8edb1af4d8198427d72fd93fc845

I get a lot of these just not not sure what they mean:

 ffmpeg[(nil)X]: [h264] No start code is found.
 ffmpeg[(nil)X]: [h264] Error splitting the input into NAL units.

FFMpegDirect issue for: https://github.com/kodi-pvr/pvr.iptvsimple/issues/330

Begin with the three linked logs and the referenced pvr.iptvsimple issue; compare the catchup-to-live transition and the redirect-related behavior. Done means reproducing the freeze and verifying that switching streams no longer freezes or produces the reported H.264 errors.