diff --git a/Packages/ohif-lesiontracker/client/compatibility/bidirectionalTool/mouseMoveCallback.js b/Packages/ohif-lesiontracker/client/compatibility/bidirectionalTool/mouseMoveCallback.js
index e1f6fd47e..3734b1111 100644
--- a/Packages/ohif-lesiontracker/client/compatibility/bidirectionalTool/mouseMoveCallback.js
+++ b/Packages/ohif-lesiontracker/client/compatibility/bidirectionalTool/mouseMoveCallback.js
@@ -29,10 +29,6 @@ export default function (event) {
     const eventData = event.detail;
     const { element } = eventData;
     cornerstoneTools.toolCoordinates.setCoords(eventData);
-    // if a mouse button is down, do nothing
-    if (eventData.which !== 0) {
-        return;
-    }
 
     // if we have no tool data for this element, do nothing
     const toolData = cornerstoneTools.getToolState(element, toolType);
diff --git a/Packages/ohif-measurements/both/schema/measurements.js b/Packages/ohif-measurements/both/schema/measurements.js
index ea7ffc901..c7d3982a4 100644
--- a/Packages/ohif-measurements/both/schema/measurements.js
+++ b/Packages/ohif-measurements/both/schema/measurements.js
@@ -255,7 +255,8 @@ const CornerstoneHandleSchema = new SimpleSchema({
     active: {
         type: Boolean,
         label: 'Active',
-        defaultValue: false
+        defaultValue: false,
+        optional: true
     },
     drawnIndependently: {
         type: Boolean,