Calculating button position if sidebar collapsed/opened

Fixes #880

diff --git a/wcfsetup/install/files/js/WCF.js b/wcfsetup/install/files/js/WCF.js
index ff89967eef33695e357a25353093a91a51ff4ad5..7cb00fdef91f39df49735a4db31a488657ee6041 100755 (executable)
--- a/wcfsetup/install/files/js/WCF.js
+++ b/wcfsetup/install/files/js/WCF.js
@@ -3743,6 +3743,9 @@ WCF.Collapsible.Sidebar = Class.extend({
                else {
                        this._mainContainer.addClass('sidebarCollapsed');
                }
+               
+               // update button position
+               this._scroll();
        }
 });