Strange behaviour with android's CustomMenu actionbar

I've got a huge problem with custom menu's actionbar. First of all...

That's the output obtained with my nexus 4 (android 4.4.4)

http://ift.tt/1rG3x1H

and that's the output with a cheap android mini-tablet (android 4.0.4)

http://ift.tt/1rG3x1J

Someone can figure out the problem? Thank you!

Actionbar snippet: (menulay1.xml, menulay2.xml, menulay3.xml are all the same)

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://ift.tt/nIICcg"
android:layout_width="48dp"
android:layout_height="wrap_content"
android:layout_gravity="right"
android:padding="8dp" >

<ImageView 
    android:id="@+id/imgmen"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:src="@drawable/vista_mod" />

<!-- Badge Count -->    

<TextView
    android:id="@+id/actionbar_notifcation_textview"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentBottom="true"
    android:layout_alignParentLeft="true"
    android:layout_alignParentRight="true"
    android:layout_alignParentTop="true"
    android:gravity="center"
    android:textSize="13dp"
    android:text="99"
    android:typeface="serif"
    android:textColor="#000000" />

    </RelativeLayout>

menu snippet:

<menu xmlns:android="http://ift.tt/nIICcg">
      <item android:id="@+id/vedi_oggi"
            android:actionLayout="@layout/menulay1"
            android:title="Eventi oggi"
            android:showAsAction="always" />

      <item android:id="@+id/vedi_mese"
            android:actionLayout="@layout/menulay2"
            android:title="Eventi mese"
            android:showAsAction="always" />

      <item android:id="@+id/vedi_tutto"
            android:actionLayout="@layout/menulay3"
            android:title="Eventi tutti"
            android:showAsAction="always" />
</menu>