Well, I learn something everyday. 
I didn’t expect that youtube uploads were done with no b-frames.
However, in regards to the keyframes I should’ve been more specific. @shotcut, you added Time Remap to the whole clip for that picture you took. When I did my picture to show how low the default last default keyframe was, it was on a split clip. In this new version, it seems that the way the keyframes are now mapped is absolute and not relative to the sub-clips.
Here is how the default keyframes are mapped to a split section of the video from the beta version of the Time Remap:
Those keyframes are relative to the sub-clip with the last default keyframe being at the highest point which is the last frame of the sub-clip.
But here is what happens with the exact same split section of the video in this version:
The default last keyframe is lower and when I was trying out it seems that in this version the keyframes are mapped out to sub-clips in an absolute way. So the last default keyframe is lower because that’s where that frame is found if the keyframes were added to the whole source clip. I don’t think this was intentional because this doesn’t make it very usable to keyframe if the default keyframes are not mapped out relative to the sub-clips. What if the source clip is a 2 hour video but the sub-clip is 30 seconds?
Also, @brian, I think that the placement of the Input and Output times should be on a separate column. So instead of this:
it should be like this:
That way the Input and Output times don’t get so easily cutoff when the Filters panel is made smaller.
Later I am going to try again with this version the bugs in the beta that you said couldn’t reproduce. Hopefully it’s not something regarding a Windows update. I made a report almost 2 months ago regarding the layouts being screwed up every time when I open Shotcut but @shotcut said he couldn’t reproduce it either.