Bug 353981 - "Problems with globalAlpha being ignored sometimes" [p=philip@zaynar.demon.co.uk (Philip Taylor) r+sr+a1.9=vlad]

content/canvas/src/nsCanvasRenderingContext2D.cpp

@@ -911,6 +911,8 @@ nsCanvasRenderingContext2D::SetGlobalAlpha(float aGlobalAlpha)
         return NS_OK;
 
     CurrentState().globalAlpha = aGlobalAlpha;
+    DirtyAllStyles();
+
     return NS_OK;
 }