diff --git a/WINGs/wpopupbutton.c b/WINGs/wpopupbutton.c
index 155c649..4899230 100644
--- a/WINGs/wpopupbutton.c
+++ b/WINGs/wpopupbutton.c
@@ -566,7 +566,17 @@ static void handleActionEvents(WMEvent * event, void *data)
 	switch (event->type) {
 		/* called for menuView */
 	case WME_EXPOSE:
-		paintMenuEntry(bPtr, bPtr->highlightedItem, True);
+		{
+			/* Paint all items: highlighted one with white bg + text,
+			 * the rest with grey bg.  X11 used to rely on the X server
+			 * auto-filling the window background; on Wayland we paint
+			 * everything ourselves. */
+			int n = WMGetArrayItemCount(bPtr->items);
+			int i;
+			for (i = 0; i < n; i++) {
+				paintMenuEntry(bPtr, i, i == bPtr->highlightedItem);
+			}
+		}
 		break;
 
 	case WME_LEAVE: