Holding Shift with Alt while dragging a range selection should copy it, not move it, to destination (Windows)

Issue type

UX/Interaction bug (incorrect behaviour)

Description with steps to reproduce

In specifying behaviors for dragging a selection with/without modifier keys, we did not account for users holding down additional modifier keys with Alt.

We specified these:

• Dragging a selection with no modifier keys moves it (expected)
• Dragging a selection while holding Alt copies it (expected)

On Windows (not Mac; Linux not checked), Shift + Alt seems to negate Alt being held and moves the selection rather than copying it.

The logic should be:

• Move the selection if no modifiers are held or if any combination of Shift and/or Ctrl are held (excluding Alt) while dragging
• Copy the selection if Alt or any combination of Alt and another modifier key is held while dragging

Supporting files, videos and screenshots

Multiple user-created YouTube videos instructed users to use Alt + Shift to move a selection instead of copying it, when in reality you don't need to hold down a shortcut at all to move a selection.

https://youtu.be/gYw-msQQyAU?si=YUYhkFwQNCmXED29&t=37
https://youtu.be/6RVPqg_uwrY?si=fPuvxSfTN6LUFSWT&t=35

What is the latest version of MuseScore Studio where this issue is present?

4.5

Regression

No.

Operating system

macOS 15

Additional context

No response

Checklist

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• I have verified that this issue has not been logged before, by searching the issue tracker for similar issues
• I have attached all requested files and information to this report
• I have attempted to identify the root problem as concisely as possible, and have used minimal reproducible examples where possible