Elements not the same
Look at this screenshot 
Element means in the first two lines only the notes. But in the last three lines it means all different things than notes.
Have a look in Sonate_in_h-moll.mscz on the fourth note in voice 1. How to mark the red "3" to move it away from the sharp. Mouse is impossible. With keyboard I do not see a way.
Comments
"How to mark the red "3" to move it away from the sharp. Mouse is impossible. With keyboard I do not see a way."
This issue is fixed now (for the 2.0.3, or you can check via a nightly) : https://github.com/musescore/MuseScore/pull/2318/files
See https://musescore.org/en/node/90816
Meanwhile: clic on the sharp -> change an offset - horizontal or vertical - in the Inspecteur (F8) -> move the fingering -> clic on the sharp and do Ctrl + R (or Reset in the Inspector)
Yes, a bit long if you enconters the same case x times: this is why the fix of this issue was welcome.
Please read https://musescore.org/en/developers-handbook/how-write-good-bug-report-…
Your bug reports are very hard to read.
Elements in the first two lines. I guess you mean Next / Previous elements in your screenshot. They are not notes. They can be clef, time signature etc...
Sorry for that, English is not my mothertongue.
But in my version using the shortcuts, which are shown at my screenshot, I can only activate notes no clef, time signature etc...
The next/previous element commands definitely select clefs and time signatures. Click the first note pf a piec,e press Ctrl+Alt+Shift+Left, and the selection moves backwards to the time signature, etc. Are you seeing something different? If so, again, please post a specific score and precise steps to reproduce the problem you are seeing. Probably best to do so in the forum, as it is most likely a misunderstanding and not a bug.
Elements in selection means, articulation, dynamics, texts an so on. But you can not activate them with the shortcut strg+alt+shift+arrow.
Thus much is indeed currently true, it's only certain elements that can traversed in this way. Eventually we hope to provide ways of navigating more elements by keyboard.
Yes I would call this a misleading UI, same terms different behaviour.
Feel free to start a thread on the forum suggesting different wordings. I can't think of one that would be consice and yet clear, which is why we settled on what we did.
This explain many things for me.
You have to write a handbook and you are defending the reasons. Sorry Mark, I know, when it is better not to involve.
We change wordings al the time when someone comes up with a better one. Thus far, in the two years since this has been implemented, no has has suggested a beter alternative. You are welcome to be the first, but again, please use the forum so we can get format from other users.