diff --git a/Frameworks/DocumentWindow/src/ProjectLayoutView.mm b/Frameworks/DocumentWindow/src/ProjectLayoutView.mm
index f6e44be0..1a74a5a7 100644
--- a/Frameworks/DocumentWindow/src/ProjectLayoutView.mm
+++ b/Frameworks/DocumentWindow/src/ProjectLayoutView.mm
@@ -320,6 +320,11 @@ NSString* const kUserDefaultsHTMLOutputSizeKey   = @"htmlOutputSize";
 	[self addCursorRect:[self htmlOutputResizeRect]  cursor:[NSCursor resizeUpDownCursor]];
 }
 
+- (BOOL)isOpaque
+{
+	return YES;
+}
+
 - (NSView*)hitTest:(NSPoint)aPoint
 {
 	if(NSMouseInRect([self convertPoint:aPoint fromView:[self superview]], [self fileBrowserResizeRect], [self isFlipped]))