Tuplet (triool) becomes “orphaned”, floats in the measure and does not affect rhythm in 3/4

Issue type

Engraving bug (incorrect score rendering)

Description with steps to reproduce

Titel:
Tuplet (triool) becomes “orphaned”, floats in the measure and does not affect rhythm in 3/4
Beschrijving:

In a 3/4 measure, when creating a triplet of eighth notes, MuseScore sometimes creates a tuplet that is not attached to any note or rest.
The tuplet:
• floats freely and can be moved anywhere
• does not attach to a note (no red dotted line)
• does not change the rhythmic duration
• causes the measure to auto fill with rests as if the tuplet does not exist
• prevents deleting notes or rests inside the measure
• disappears only when deleting the entire measure
This happens even in a completely new, empty measure, in Voice 1, with correct cursor placement.
This results in a “ghost tuplet” that corrupts the measure.
Steps to reproduce:

1. Create a new 3/4 score
2. Insert a new empty measure
3. Select the rest on beat 3
4. Enter note input mode
5. Choose eighth note
6. Enter one eighth note
7. Select it
8. Press “Tuplet → Triplet”
   → MuseScore creates a tuplet that is not attached to the note
   Expected:
   The tuplet should attach to the selected eighth note and replace beat 3 with 3 eighth note triplet notes.
   Actual:
   The tuplet floats, does not affect rhythm, and corrupts the measure.

Supporting files, videos and screenshots

In which versions of MuseScore Studio is this issue present?

4.7.3‑260608135 (Windows 11)

Regression

I was unable to check

Operating system

WINDOWS 11

Additional context

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