bug fixes storage mgr

sys/apis/ui.lua

@@ -1464,10 +1464,6 @@ end
 function UI.Grid:setParent()
   UI.Window.setParent(self)
   self:update()
-end
-
-function UI.Grid:resize()
-  UI.Window.resize(self)
 
   if not self.pageSize then
     if self.disableHeader then
@@ -1478,6 +1474,16 @@ function UI.Grid:resize()
   end
 end
 
+function UI.Grid:resize()
+  UI.Window.resize(self)
+
+  if self.disableHeader then
+    self.pageSize = self.height
+  else
+    self.pageSize = self.height - 1
+  end
+end
+
 function UI.Grid:adjustWidth()
   if self.autospace then
     for _,col in pairs(self.columns) do