diff --git a/builds/4chan-X.js b/builds/4chan-X.js
index 89800ad53..9dc3f6824 100644
--- a/builds/4chan-X.js
+++ b/builds/4chan-X.js
@@ -6446,7 +6446,7 @@
       return arr.splice(0, i);
     },
     read: function(e) {
-      var bottom, height, i, post, posts, read, top, _ref;
+      var ID, bottom, height, i, post, posts, read, top, _ref;
 
       if (d.hidden || !Unread.posts.length) {
         return;
@@ -6458,14 +6458,14 @@
       while (post = posts[--i]) {
         _ref = post.nodes.root.getBoundingClientRect(), bottom = _ref.bottom, top = _ref.top;
         if ((bottom < height) && (top > 0)) {
-          read.push(post);
+          ID = post.ID;
           posts.remove(post);
         }
       }
-      if (!read.length) {
+      if (!ID) {
         return;
       }
-      Unread.lastReadPost = read[read.length - 1].ID;
+      Unread.lastReadPost = ID;
       Unread.saveLastReadPost();
       Unread.readArray(Unread.postsQuotingYou);
       if (e) {
@@ -8234,6 +8234,11 @@
       if (this.thread.OP === qpost) {
         return;
       }
+      if (QuoteThreading.hasRun) {
+        if (!Unread.posts.contains(qpost)) {
+          return;
+        }
+      }
       qroot = qpost.nodes.root;
       threadContainer = qroot.nextSibling;
       if ((threadContainer != null ? threadContainer.className : void 0) !== 'threadContainer') {
diff --git a/builds/4chan-X.user.js b/builds/4chan-X.user.js
index 870a7801f..62b4e306e 100644
--- a/builds/4chan-X.user.js
+++ b/builds/4chan-X.user.js
@@ -6438,7 +6438,7 @@
       return arr.splice(0, i);
     },
     read: function(e) {
-      var bottom, height, i, post, posts, read, top, _ref;
+      var ID, bottom, height, i, post, posts, read, top, _ref;
 
       if (d.hidden || !Unread.posts.length) {
         return;
@@ -6450,14 +6450,14 @@
       while (post = posts[--i]) {
         _ref = post.nodes.root.getBoundingClientRect(), bottom = _ref.bottom, top = _ref.top;
         if ((bottom < height) && (top > 0)) {
-          read.push(post);
+          ID = post.ID;
           posts.remove(post);
         }
       }
-      if (!read.length) {
+      if (!ID) {
         return;
       }
-      Unread.lastReadPost = read[read.length - 1].ID;
+      Unread.lastReadPost = ID;
       Unread.saveLastReadPost();
       Unread.readArray(Unread.postsQuotingYou);
       if (e) {
@@ -8251,6 +8251,11 @@
       if (this.thread.OP === qpost) {
         return;
       }
+      if (QuoteThreading.hasRun) {
+        if (!Unread.posts.contains(qpost)) {
+          return;
+        }
+      }
       qroot = qpost.nodes.root;
       threadContainer = qroot.nextSibling;
       if ((threadContainer != null ? threadContainer.className : void 0) !== 'threadContainer') {
diff --git a/builds/crx.crx b/builds/crx.crx
index 340b385d7..14f54ad67 100644
Binary files a/builds/crx.crx and b/builds/crx.crx differ
diff --git a/builds/crx/script.js b/builds/crx/script.js
index 004512c4b..1d2ee9175 100644
--- a/builds/crx/script.js
+++ b/builds/crx/script.js
@@ -6359,7 +6359,7 @@
       return arr.splice(0, i);
     },
     read: function(e) {
-      var bottom, height, i, post, posts, read, top, _ref;
+      var ID, bottom, height, i, post, posts, read, top, _ref;
 
       if (d.hidden || !Unread.posts.length) {
         return;
@@ -6371,14 +6371,14 @@
       while (post = posts[--i]) {
         _ref = post.nodes.root.getBoundingClientRect(), bottom = _ref.bottom, top = _ref.top;
         if ((bottom < height) && (top > 0)) {
-          read.push(post);
+          ID = post.ID;
           posts.remove(post);
         }
       }
-      if (!read.length) {
+      if (!ID) {
         return;
       }
-      Unread.lastReadPost = read[read.length - 1].ID;
+      Unread.lastReadPost = ID;
       Unread.saveLastReadPost();
       Unread.readArray(Unread.postsQuotingYou);
       if (e) {
@@ -8153,6 +8153,11 @@
       if (this.thread.OP === qpost) {
         return;
       }
+      if (QuoteThreading.hasRun) {
+        if (!Unread.posts.contains(qpost)) {
+          return;
+        }
+      }
       qroot = qpost.nodes.root;
       threadContainer = qroot.nextSibling;
       if ((threadContainer != null ? threadContainer.className : void 0) !== 'threadContainer') {
diff --git a/src/code/monitoring/unread.coffee b/src/code/monitoring/unread.coffee
index 3b1f404bd..53368f1af 100644
--- a/src/code/monitoring/unread.coffee
+++ b/src/code/monitoring/unread.coffee
@@ -108,11 +108,11 @@ Unread =
     while post = posts[--i]
       {bottom, top} = post.nodes.root.getBoundingClientRect()
       if (bottom < height) and (top > 0)  # post is completely read
-        read.push post
+        ID = post.ID
         posts.remove post
-    return unless read.length
+    return unless ID
 
-    Unread.lastReadPost = read[read.length - 1].ID
+    Unread.lastReadPost = ID
     Unread.saveLastReadPost()
     Unread.readArray Unread.postsQuotingYou
     Unread.update() if e
diff --git a/src/code/quoting/quotethreading.coffee b/src/code/quoting/quotethreading.coffee
index 81a9d19b3..0b0b59c43 100644
--- a/src/code/quoting/quotethreading.coffee
+++ b/src/code/quoting/quotethreading.coffee
@@ -70,6 +70,9 @@ QuoteThreading =
     delete @cb
 
     return if @thread.OP is qpost
+    
+    if QuoteThreading.hasRun
+      return unless Unread.posts.contains qpost
 
     qroot = qpost.nodes.root
     threadContainer = qroot.nextSibling