Un-expanding stickies only have 1 replies on the index.

4chan_x.user.js

@@ -4835,15 +4835,19 @@
           a.textContent = text.replace('-', '+');
           ExpandComment.contract(thread.OP);
           num = (function() {
-            switch (g.BOARD) {
+            if (thread.isSticky) {
-              case 'b':
+              return 1;
-              case 'vg':
+            } else {
-              case 'q':
+              switch (g.BOARD) {
-                return 3;
+                case 'b':
-              case 't':
+                case 'vg':
-                return 1;
+                case 'q':
-              default:
+                  return 3;
-                return 5;
+                case 't':
+                  return 1;
+                default:
+                  return 5;
+              }
             }
           })();
           replies = $$('.thread > .replyContainer', threadRoot).slice(0, -num);

src/features.coffee

@@ -3212,7 +3212,9 @@ ExpandThread =
         a.textContent = text.replace '-', '+'
         ExpandComment.contract thread.OP
         #goddamit moot
-        num = switch g.BOARD
+        num = if thread.isSticky
+          1
+        else switch g.BOARD
           # XXX boards config
           when 'b', 'vg', 'q' then 3
           when 't' then 1