Looks great on the Steam Deck in spite of the tiny 1200x800 pixel space:
One quirk I have noticed is that all pop-up dialogues/modals become full screen:
For comparison this is what it looks like on the current stable version:
However the modals look normal here:
I did notice that even in previous versions that kdenlive would sometimes suddenly fit itself on the screen? If I would edit the kwin settings for maximize horizontally/vertically/hide title bar it sometimes would fit sometimes not.
With the release candidate it just looked good from the start, save for the weird dialogue windows.
Great work team!