Copy/pasting tied notes in chords using selection filter is buggy

Issue type

UX/Interaction bug (incorrect behaviour)

Description with steps to reproduce

Symptom 1 (in video, 0:00–0:07)

1. Create a single note tied to the the top note of a chord in the next beat
2. Select the measure. In the selection filter, select only 'Top note' (and have 'Include single notes' on)
3. Copy and paste the selection into the next measure
4. See the notes are not tied together

Note that this is not broken for individual notes in chords where all notes are tied (in video, 0:08–0:22).

Symptom 2 (in video, 0:23–end)

1. Create a two-note chord tied to a three-note chord, where the three-note chord has an untied note at the bottom of the stack
2. Select the measure. In the selection filter, select 'Top note' and 'Bottom note' (and have 'Include single notes' on)
3. Copy and paste the selection into the next measure
4. See that an invalid slanted tie is between the two chords

Supporting files, videos and screenshots

https://github.com/user-attachments/assets/27c34e40-14c8-4287-b7bf-a8c62ed61a67

In which versions of MuseScore Studio is this issue present?

4.6.5

Regression

No.

Operating system

macOS 15

Additional context

No response

Checklist

• This report follows the guidelines for reporting bugs and issues
• 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

Reproduce the issue in MuseScore Studio 4.6.5 using the two chord-and-selection-filter scenarios described in the report. Trace the copy/paste handling for filtered chord selections; done means single-note ties are preserved and no invalid slanted tie is created when only the top and bottom notes are copied.