--- a/eric7/EricWidgets/EricSideBar.py	Thu Sep 09 19:22:12 2021 +0200
+++ b/eric7/EricWidgets/EricSideBar.py	Fri Sep 10 19:45:14 2021 +0200
@@ -396,6 +396,10 @@
         @type str
         """
         self.__iconBar.setBarSize(barSize)
+        if self.isMinimized():
+            self.__shrinkIt()
+        else:
+            self.__expandIt()
     
     def barSize(self):
         """