Do not display a single keyframe on timeline (overlapped by fade in/out dots)
If keyframes are not used (only the first one is automatically generated) i think that showing it on the timeline can be an issue.. Looking at this thread: https://forum.kde.org/viewtopic.php?f=265&t=176012 the user is touching the keyframe because this is placed on the first frame of the clip, where there are also edges to grab.. other points to move (fade in out) user is not using keyframes at all and don't need this "extra point" on timeline
ALSO... moving the point vertically is not creating the tipical coloured area of keyframes (because there is not a second keyframe?)
the crop scale and tilt is generating a keyfarme at half height of timeline (where the clip is usually grabbed to change lenght) kdenlive_vO60w2ajbb
if i can suggest... do not show the keyframe if it is JUST ONE.. and also make the coloured area visible if there is only a keyframe (just to understand what is happening)