Bug Report: [Crash Editor] Having Hold Note Strumlines in Chart Editor leaking RAM & selection box issue

[Starexify]

Issue Checklist

• I have read the Contributing Guide
• I have checked the Issues/Discussions pages to see if my issue has already been reported
• I have properly titled my issue

Platform

Itch.io (Downloadable Build) - Windows

Version

0.6.4

Description (include any images, videos, errors, or crash logs)

When using Chart Editor I met these problems:

1&2. Selection Boxes for hold notes looking like they're overlapped and RAM leaking from having Hold Note Strums (because they have gaps between them?):

Selection.Boxes.and.RAM.Leaking.mp4

2.5. RAM Leaking when staying at the start of the Note Grid:

RAM.Leaking.when.at.the.start.of.the.grid.mp4

3. Hold Note Strums increasing RAM Usage insignificantly when being passed through (not sure if fixable but I just found it unintended to happen)

Passing.Through.High.RAM.Usage.mp4

Steps to Reproduce

1. Open Chart Editor
2. Try what I did and place strumlines randomly and leave gaps sometimes between for that to happen
   2.5. High RAM Usage/Selection Boxes looking like theyre overlapped

[Lasercar]

Could you test the linked PR and see if that fixes most of your problems?

Just git pull https://github.com/NotHyper-474/Funkin-Legacy-Linux.git bugfix/duplicate-displayed-notes --rebase on a new checked out branch.