Selecting and dragging multiple tracks on Sequence window combines the tracks to one row

With plural shot tracks in different rows in the sequencer window, selecting these tracks and dragging one of them (but not the bottom one) left or right will merge the rows. Please check the attached video.

[Link Removed]

This occurs in UE5.3 and later (including UE5Main) and does not in UE5.2 and earlier. 

1. Open the attached project (SeqIssueUE53.zip) on UE5.3 and later.
2. Open “Sequencer” asset from the content browser.
3. Drag to select three tracks as what the attached video shows.
4. Drag Shot01 to move it horizontally and see three rows are combined to one row.
5. Press CTRL+Z to check the other scenario
6. Drag Shot02 to move it horizontally to check the issue then press CTRL+Z
7. Drag Shot03 to move it horizontally. This does not cause an issue.

[UE-23848] Bug Status

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