Make Thread::{hide,show} handle the catalog view.

src/General/Index.coffee

@@ -134,7 +134,7 @@ Index =
           $.off @el, 'click', @cb if @cb
           @cb = ->
             $.event 'CloseMenu'
-            Index.toggleHide post
+            PostHiding.toggle post
           $.on @el, 'click', @cb
           true
 
@@ -166,7 +166,7 @@ Index =
     return if e.button isnt 0
     thread = g.threads[@parentNode.dataset.fullID]
     if e.shiftKey
-      Index.toggleHide thread.OP
+      PostHiding.toggle thread.OP
     else if e.altKey
       Index.togglePin thread
     else
@@ -194,9 +194,6 @@ Index =
       offsetX: 15
       offsetY: -20
     setTimeout (-> el.hidden = false if el.parentNode), .25 * $.SECOND
-  toggleHide: (post) ->
-    $.rm post.thread.catalogView.nodes.root
-    PostHiding.toggle post
   togglePin: (thread) ->
     data =
       boardID:  thread.board.ID

src/General/Thread.coffee

@@ -67,6 +67,7 @@ class Thread
     @isHidden = true
     root = @OP.nodes.root.parentNode
     Index.updateHideLabel()
+    $.rm @catalogView.nodes.root if @catalogView
 
     unless makeStub
       root.hidden = true
@@ -94,6 +95,7 @@ class Thread
       delete @stub
     @OP.nodes.root.parentNode.hidden = false
     Index.updateHideLabel()
+    $.rm @catalogView.nodes.root if @catalogView
 
   kill: ->
     @isDead = true