potential fix for #5692

gistfile1.txt

diff --git a/src/app/composer/qgscomposer.cpp b/src/app/composer/qgscomposer.cpp
index 3fbbf2c..29ea24b 100644
--- a/src/app/composer/qgscomposer.cpp
+++ b/src/app/composer/qgscomposer.cpp
@@ -83,7 +83,9 @@ QgsComposer::QgsComposer( QgisApp *qgis, const QString& title )
   int size = settings.value( "/IconSize", QGIS_ICON_SIZE ).toInt();
   setIconSize( QSize( size, size ) );
 
+#ifndef Q_WS_MAC
   setFontSize( settings.value( "/fontPointSize", QGIS_DEFAULT_FONTSIZE ).toInt() );
+#endif
 
   QToolButton* orderingToolButton = new QToolButton( this );
   orderingToolButton->setPopupMode( QToolButton::InstantPopup );