Would it be possible to have some kind of filter on ‘undo’.
For example, ‘exclude selection’.
If I add, say, a tempo mark, I’d like the undo to remove the tempo mark, not my twenty dodgy selection mistakes. 
You should read Undo history: Bug or feature? - #3 by dspreadbury - Dorico - Steinberg Forums
as Daniel already responded to that.
Thanks Marc, that thread didn’t come up in my search.
Dorico’s behaviour here seems well over the top.
Dealing with selection screw-ups is my job as it moves forwards (it’s already reset itself when I screwed up).
I need ‘undo’ to take care of backwards problems.
IMO ‘undo’ should be a quick fix to a quick visible stuff up.
[wow… the forum changes ‘c*ck’ up to ‘rock’… 
]
Sibelius has always worked this same way. And now Dorico even saves tool selection as an undoable action. It’s mostly not sensible because it is different from all other software. But it can be slightly useful when you know to expect it. When I want to undo more than the last thing in Sibelius, I just go to the Undo stack to pick a point to go back to rather than individual Undos. Even after 16 years it doesn’t feel natural.
It might be nice if it were a bit more intelligent; for example, if you select a bar and deselect repeatedly, there is no use whatsoever to save all those steps to the Undo stack. But of course if they’re going to refine it, they have to develop rules by which it should operate, which would be quite a lot of work in this case. This team really values logical and consistent over least-surprise and intuitive.
The selection/undo model is similar to that of photoshop. The benefit comes when you spend a while building up multiple selections and then accidentally click in the wrong place and the selection gets reset. If selections aren’t part of the Undo model then you have to start all over again.
As has been discussed elsewhere in this forum, ‘intuitive’ depends on which software products you are used to.
If there is any goal towards ‘intuitive’, surely it should be that a musician finds it so, rather than a user of software?
I understand multiple non-contiguous selection in Photoshop, but in decades of use of notation software I’ve never been bitten by this, whereas Dorico is biting me by not distinguishing between material changes to the score and selection.
Maybe the way it works is best for most people, which is why I asked as a (long-term) feature request to maybe have a ‘filter’ on undo/redo.
Late comer to this thread, but I agree with steveparker on this. Undo is very unintuitive in its current form.
Thumbs up on the current undo behavior being about 90% annoying and 10% helpful. Several times a day I find myself hitting CTRL-Z 12 times where intuitively I would only expect one. An option that toggles between current behavior and an undo stack that only tracks actual modifications would be very welcome.
I would like this option as well… to NOT have ‘undo select’ as part of the Undo stack. Photoshop this 'aint. (oops, four steps to correct “Isn’t.” LOL?)
The fact that Dorico includes selections in Undo/Redo had me frowning from the start but it never bugged me just enough to write something about it on the forum. Seeing this topic revived however, I’d like to offer a +1 for the option to exclude selections from undo/redo. In my Dorico beginnings I thought the “Follow selection changes on undo and redo” checkbox did that, but that turned out to mean something else entirely.
Also, I’ve done a forum search on the topic and as others have mentioned, including the moment your document was saved in the undo/redo history list can also be extremely useful. Not to be able to undo the actual save, but simply as a marker so it’s easy to revert all your changes to your last save. Especially since at any given moment you have to sift through a gazillion instances of Select to undo your actual actions. 
OT: As a side note, the above statement that Dorico’s undo/redo method has apparently been inspired by Photoshop seems a bit amusing to me for a software that takes pride in the fact that its approach to music notation is not graphical. 
That setting does not affect whether selections are included in undo/redo actions.
What it is supposed to do is poorly documented. Searching the exact name of the setting in the help files gives no results apart from general topics on undoing/redoing. The setting is mentioned in the Dorico 5 version history in which it is simply stated that it “now works as expected once more” without elaborating what that might be. I had to dig until the Dorico 2.1.1.0 version history to find a clue:
This still is only half the story though, as I have no idea what “the behavior in Dorico 1.2.1.0” was.
When experimenting with this setting, I’m still not sure what it’s supposed to do. Example: when opt/alt+clicking to copy a selection e.g. 100 bars away and then undoing, the view always jumps back to the original selection (i.e. 100 bars forward) whether that setting is checked or not.