diff --git a/utils/fgqcanvas/canvasconnection.cpp b/utils/fgqcanvas/canvasconnection.cpp
index f9d8e72f8..04656495d 100644
--- a/utils/fgqcanvas/canvasconnection.cpp
+++ b/utils/fgqcanvas/canvasconnection.cpp
@@ -207,7 +207,6 @@ void CanvasConnection::onTextMessageReceived(QString message)
     if (json.isObject()) {
         // process new nodes
         QJsonArray created = json.object().value("created").toArray();
-        qInfo() << "new nodes:" << created.size();
         Q_FOREACH (QJsonValue v, created) {
             QJsonObject newProp = v.toObject();
 
@@ -221,7 +220,7 @@ void CanvasConnection::onTextMessageReceived(QString message)
             LocalProp* newNode = propertyFromPath(localPath);
             newNode->setPosition(newProp.value("position").toInt());
             // store in the global dict
-            unsigned int propId = newProp.value("id").toInt();
+            int propId = newProp.value("id").toInt();
             if (idPropertyDict.contains(propId)) {
                 qWarning() << "duplicate add of:" << nodePath << "old is" << idPropertyDict.value(propId)->path();
             } else {
@@ -235,7 +234,7 @@ void CanvasConnection::onTextMessageReceived(QString message)
         // process removes
         QJsonArray removed = json.object().value("removed").toArray();
         Q_FOREACH (QJsonValue v, removed) {
-            unsigned int propId = v.toInt();
+            int propId = v.toInt();
             if (!idPropertyDict.contains(propId)) {
                 continue;
             }
@@ -261,7 +260,7 @@ void CanvasConnection::onTextMessageReceived(QString message)
                 continue;
             }
 
-            unsigned int propId = change.at(0).toInt();
+            int propId = change.at(0).toInt();
             if (!idPropertyDict.contains(propId)) {
                 qWarning() << "ignoring unknown prop ID " << propId;
                 continue;
diff --git a/utils/fgqcanvas/fgcanvaselement.cpp b/utils/fgqcanvas/fgcanvaselement.cpp
index 89b14acc1..1718c6e3c 100644
--- a/utils/fgqcanvas/fgcanvaselement.cpp
+++ b/utils/fgqcanvas/fgcanvaselement.cpp
@@ -151,7 +151,7 @@ void FGCanvasElement::polish()
         _fillColor = parseColorValue(getCascadedStyle("fill"));
         const auto opacity = getCascadedStyle("fill-opacity");
         if (!opacity.isNull()) {
-            _fillColor.setAlphaF(opacity.toFloat());
+            _fillColor.setAlphaF(opacity.toReal());
         }
 
         _styleDirty = false;
@@ -307,7 +307,7 @@ bool FGCanvasElement::onChildAdded(LocalProp *prop)
     } else if (nm == "id") {
         connect(prop, &LocalProp::valueChanged, this, &FGCanvasElement::markSVGIDDirty);
         return true;
-    } else if (prop->name() == "update") {
+    } else if (nm == "update") {
         // disable updates optionally?
         return true;
     } else if ((nm == "clip") || (nm == "clip-frame")) {
@@ -320,11 +320,16 @@ bool FGCanvasElement::onChildAdded(LocalProp *prop)
         return true;
     }
 
-    if (prop->name() == "layer-type") {
+    if (nm == "symbol-type") {
+        // ignored for now
+        return true;
+    }
+
+    if (nm == "layer-type") {
         connect(prop, &LocalProp::valueChanged, [this](QVariant value)
         {qDebug() << "layer-type:" << value.toByteArray() << "on" << _propertyRoot->path(); });
         return true;
-    } else if (prop->name() == "z-index") {
+    } else if (nm == "z-index") {
         connect(prop, &LocalProp::valueChanged, this, &FGCanvasElement::markZIndexDirty);
         return true;
     }
@@ -355,12 +360,12 @@ QColor FGCanvasElement::fillColor() const
 void FGCanvasElement::onCenterChanged(QVariant value)
 {
     LocalProp* senderProp = static_cast<LocalProp*>(sender());
-    int centerTerm = senderProp->index();
+    const unsigned int centerTerm = senderProp->index();
 
     if (centerTerm == 0) {
-        _center.setX(value.toFloat());
+        _center.setX(value.toReal());
     } else {
-        _center.setY(value.toFloat());
+        _center.setY(value.toReal());
     }
 
     requestPolish();
@@ -522,10 +527,10 @@ void FGCanvasElement::parseCSSClip(QByteArray value)
         return;
     }
 
-    const float top = parseCSSValue(clipRectDesc.at(0));
-    const float right = parseCSSValue(clipRectDesc.at(1));
-    const float bottom = parseCSSValue(clipRectDesc.at(2));
-    const float left = parseCSSValue(clipRectDesc.at(3));
+    const qreal top = parseCSSValue(clipRectDesc.at(0));
+    const qreal right = parseCSSValue(clipRectDesc.at(1));
+    const qreal bottom = parseCSSValue(clipRectDesc.at(2));
+    const qreal left = parseCSSValue(clipRectDesc.at(3));
 
     _clipRect = QRectF(left, top, right - left, bottom - top);
   //  qDebug() << "final clip rect:" << _clipRect << "from" << value;
diff --git a/utils/fgqcanvas/fgcanvaspath.cpp b/utils/fgqcanvas/fgcanvaspath.cpp
index 41bc88dd1..a21415bbc 100644
--- a/utils/fgqcanvas/fgcanvaspath.cpp
+++ b/utils/fgqcanvas/fgcanvaspath.cpp
@@ -527,6 +527,37 @@ bool FGCanvasPath::onChildAdded(LocalProp *prop)
     return false;
 }
 
+bool FGCanvasPath::onChildRemoved(LocalProp* prop)
+{
+    if (FGCanvasElement::onChildRemoved(prop)) {
+        return true;
+    }
+
+    const auto name = prop->name();
+    if (name == "rect") {
+        _isRect = false;
+        markPathDirty();
+        return true;
+    }
+
+    if ((name == "cmd") || (name == "coord") || (name == "svg")) {
+        markPathDirty();
+        return true;
+    }
+
+    if ((name == "cmd-geo") || (name == "coord-geo")) {
+        // ignored
+        return true;
+    }
+
+    if (name.startsWith("stroke")) {
+        markStrokeDirty();
+        return true;
+    }
+
+    return false;
+}
+
 typedef enum
 {
     PathClose                               = ( 0 << 1),
@@ -806,8 +837,8 @@ void FGCanvasPath::rebuildPathFromCommands(const std::vector<int>& commands, con
         bool isRelative = cmd & 0x1;
         const int op = cmd & ~0x1;
         const int cmdIndex = op >> 1;
-        const float baseX = isRelative ? newPath.currentPosition().x() : 0.0f;
-        const float baseY = isRelative ? newPath.currentPosition().y() : 0.0f;
+        const qreal baseX = isRelative ? newPath.currentPosition().x() : 0.0f;
+        const qreal baseY = isRelative ? newPath.currentPosition().y() : 0.0f;
 
         if ((currentCoord + CoordsPerCommand[cmdIndex]) > coords.size()) {
             qWarning() << "insufficient path data" << currentCoord << cmdIndex << CoordsPerCommand[cmdIndex] << coords.size();
diff --git a/utils/fgqcanvas/fgcanvaspath.h b/utils/fgqcanvas/fgcanvaspath.h
index 34f0dc227..287aa3a10 100644
--- a/utils/fgqcanvas/fgcanvaspath.h
+++ b/utils/fgqcanvas/fgcanvaspath.h
@@ -48,6 +48,7 @@ private:
     void markStrokeDirty();
 private:
     bool onChildAdded(LocalProp *prop) override;
+    bool onChildRemoved(LocalProp* prop) override;
 
     void rebuildPath() const;
     void rebuildPen() const;