From 838385443053aab0997fee6ec8633571d7efa660 Mon Sep 17 00:00:00 2001
From: oxygen-dioxide <54425948+oxygen-dioxide@users.noreply.github.com>
Date: Sun, 5 Nov 2023 16:01:48 +0800
Subject: [PATCH] Fix OpenUtau freezing when using classic plugins if there are
 overlapping notes

---
 OpenUtau.Core/Classic/Ust.cs | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/OpenUtau.Core/Classic/Ust.cs b/OpenUtau.Core/Classic/Ust.cs
index e5a9b0d65..8e4600a01 100644
--- a/OpenUtau.Core/Classic/Ust.cs
+++ b/OpenUtau.Core/Classic/Ust.cs
@@ -341,9 +341,12 @@ public static List<UNote> WritePlugin(UProject project, UVoicePart part, UNote f
                 var note = first;
                 while (note != last.Next) {
                     if (note.position < position) {
+                        //Ignore current note if it is overlapped with previous note
+                        note = note.Next;
                         continue;
                     }
                     if (note.position > position) {
+                        //Insert R note if there is space between two notes
                         writer.WriteLine($"[#{sequence.Count:D4}]");
                         var spacer = UNote.Create();
                         spacer.position = position;