I will check to see if The PiP has an impact. Thank you for the data point that yours behaves differently from mine. If it isn't PiP, I might have to try the additional debloat. I do have an additional remote coming that might help debug the difference between the TiVo remote an other things.
I agree that the new show indicators can be wrong, but I would rather have a false positive than miss one. This request is really from my wife. She flat out said no to YTTV based on the handling of new recordings. I have to keep her happy to. 
The stretch issues were on the Android App on my S21 Phone w/ a 20:9 aspect ratio. Disabling stretch to fit helps, but then it crops the video because it still fits to width. Basically, there is no just basic fit to screen that makes sure the video fits both horizontally and vertically without stretching/cropping in all cases. I think this is a simple fix to just check the vertical as well as the horizontal. This is low on my priorities though because watching on my phone isn't a requirement (but a nice to have).
Thanks again,
Josh