1) With the Size, Position & Rotate filter when you have the Size Mode to Distort and you zoom in tight (like 300% or more) then press the default button, it doesn’t go back to the position it was before the zoom in. It’ll throw the image somewhere else.
2) If the name of a file is long, when you go to Properties the clip’s name appears with “…” at the front. If you then from the Properties tab simply click away to change the focus from that tab to another panel like the Timeline, the name of the clip gets changed with the first part of the name cut off with “…” at the start instead. Demo.
3) On my personal layout I have the Keyframes and the Jobs panels as low as they can go but every time I restart Shotcut it defaults it to a taller height.
My Keyframe layout
Keyframe layout after Opening Shotcut
My Jobs layout
Jobs layout after Opening Shotcut
4) Make sure Ripple All Tracks is on. Have two clips one on top of the other. On the bottom clip create a transition. On the clip above, split the clip anywhere before the transition below. While still on the clip above, go anywhere after the transition and ripple trim the clip in (Shift+I) so that the transition below is deleted. Now undo. On the track below the clip that was to the left of the transition will be deleted. Demo.