Yes, this is different and actually should be already fixed in 2.0.3 Beta 1 - please check.

Agreed and added to the spec, thanks!

Thanks for clarifying.

Thomas, I'm sorry if I have offended you in any way, I just don't agree. Moderators should be able to edit user's posts when they think that the post can be improved. Users are very likely to suggest a solution that is too narrow and could be generalized for the benefit of all - also we shouldn't forget that the more general suggestion will likely get more votes.
Sometimes a very good idea which solves an important problem can get downvoted only because the author was too specific about how it should be implemented.

I think you would agree that the main point here is not that exactly the Ctrl+Up/Down key combination should be used, but that there should be a shortcut at all.

Also I don't quite get how would scrolling the tags list help you in changing the tag selection, which is anyway done only via the search box? Could you please elaborate here?

I edited it to be more general, partly because Ctrl+Up/Down are already used in the notes list and are thus unavailable. Sorry that didn't let you know.

No, this is not valid - the tag filter should have been reset as the last note with this tag was deleted.

Thanks for reporting!