diff --git a/interface/src/ui/overlays/Web3DOverlay.cpp b/interface/src/ui/overlays/Web3DOverlay.cpp
index 94699e7b42..e50cf3a671 100644
--- a/interface/src/ui/overlays/Web3DOverlay.cpp
+++ b/interface/src/ui/overlays/Web3DOverlay.cpp
@@ -353,6 +353,10 @@ void Web3DOverlay::handlePointerEventAsTouch(const PointerEvent& event) {
     if (event.getType() == PointerEvent::Move) {
         // Forward a mouse move event to the Web surface so that hover events are generated.
         // Must send a mouse move event that matches up with touch move event in order for scroll bars to work.
+
+        // Scroll bar dragging is a bit unstable in the tablet (content can jump up and down at times). 
+        // This may be improved in Qt 5.8. Release notes: "Cleaned up touch and mouse event delivery".
+
         QMouseEvent* mouseEvent = new QMouseEvent(QEvent::MouseMove, windowPoint, windowPoint, windowPoint, Qt::NoButton, Qt::NoButton, Qt::NoModifier);
         QCoreApplication::postEvent(_webSurface->getWindow(), mouseEvent);
     }