diff --git a/docs/app/js/sanddance-app.js b/docs/app/js/sanddance-app.js
index d09b350e5..0e32ab315 100644
--- a/docs/app/js/sanddance-app.js
+++ b/docs/app/js/sanddance-app.js
@@ -83048,7 +83048,11 @@ const markStager = (options, stage, scene, x, y, groupType) => {
 };
 
 function convertAngle(vegaTextAngle) {
-  return 360 - vegaTextAngle;
+  if (vegaTextAngle && !isNaN(vegaTextAngle)) {
+    return 360 - vegaTextAngle;
+  }
+
+  return 0;
 }
 
 function convertAlignment(textAlign) {
@@ -83062,6 +83066,8 @@ function convertAlignment(textAlign) {
     case 'right':
       return 'end';
   }
+
+  return 'start';
 }
 
 function convertBaseline(baseline) {
@@ -83070,7 +83076,7 @@ function convertBaseline(baseline) {
       return 'center';
   }
 
-  return baseline;
+  return baseline || 'bottom';
 }
 
 var _default = markStager;
@@ -90888,7 +90894,7 @@ Object.defineProperty(exports, "__esModule", {
 exports.version = void 0;
 // Copyright (c) Microsoft Corporation. All rights reserved.
 // Licensed under the MIT license.
-const version = '1.6.6';
+const version = '1.6.7';
 exports.version = version;
 },{}],"tCOI":[function(require,module,exports) {
 "use strict";
diff --git a/docs/dist/sanddance-explorer/v1/sanddance-explorer.js b/docs/dist/sanddance-explorer/v1/sanddance-explorer.js
index 9ba8a4a0c..52e22edf0 100644
--- a/docs/dist/sanddance-explorer/v1/sanddance-explorer.js
+++ b/docs/dist/sanddance-explorer/v1/sanddance-explorer.js
@@ -8575,7 +8575,11 @@ const markStager = (options, stage, scene, x, y, groupType) => {
 };
 
 function convertAngle(vegaTextAngle) {
-  return 360 - vegaTextAngle;
+  if (vegaTextAngle && !isNaN(vegaTextAngle)) {
+    return 360 - vegaTextAngle;
+  }
+
+  return 0;
 }
 
 function convertAlignment(textAlign) {
@@ -8589,6 +8593,8 @@ function convertAlignment(textAlign) {
     case 'right':
       return 'end';
   }
+
+  return 'start';
 }
 
 function convertBaseline(baseline) {
@@ -8597,7 +8603,7 @@ function convertBaseline(baseline) {
       return 'center';
   }
 
-  return baseline;
+  return baseline || 'bottom';
 }
 
 var _default = markStager;
@@ -16415,7 +16421,7 @@ Object.defineProperty(exports, "__esModule", {
 exports.version = void 0;
 // Copyright (c) Microsoft Corporation. All rights reserved.
 // Licensed under the MIT license.
-const version = '1.6.6';
+const version = '1.6.7';
 exports.version = version;
 },{}],"rZaE":[function(require,module,exports) {
 "use strict";
diff --git a/docs/dist/sanddance/v1/sanddance.js b/docs/dist/sanddance/v1/sanddance.js
index 84f69636a..187367d2a 100644
--- a/docs/dist/sanddance/v1/sanddance.js
+++ b/docs/dist/sanddance/v1/sanddance.js
@@ -6864,7 +6864,10 @@ void main(void) {
         });
     };
     function convertAngle(vegaTextAngle) {
-        return 360 - vegaTextAngle;
+        if (vegaTextAngle && !isNaN(vegaTextAngle)) {
+            return 360 - vegaTextAngle;
+        }
+        return 0;
     }
     function convertAlignment(textAlign) {
         switch (textAlign) {
@@ -6872,12 +6875,13 @@ void main(void) {
             case 'left': return 'start';
             case 'right': return 'end';
         }
+        return 'start';
     }
     function convertBaseline(baseline) {
         switch (baseline) {
             case 'middle': return 'center';
         }
-        return baseline;
+        return baseline || 'bottom';
     }
 
     var GroupType;
@@ -12762,7 +12766,7 @@ void main(void) {
 
     // Copyright (c) Microsoft Corporation. All rights reserved.
     // Licensed under the MIT license.
-    const version = '1.6.6';
+    const version = '1.6.7';
 
     // Copyright (c) Microsoft Corporation. All rights reserved.
 
diff --git a/docs/tests/es6/js/sanddance.js b/docs/tests/es6/js/sanddance.js
index 403d76efe..0c4a265c8 100644
--- a/docs/tests/es6/js/sanddance.js
+++ b/docs/tests/es6/js/sanddance.js
@@ -143922,7 +143922,11 @@ const markStager = (options, stage, scene, x, y, groupType) => {
 };
 
 function convertAngle(vegaTextAngle) {
-  return 360 - vegaTextAngle;
+  if (vegaTextAngle && !isNaN(vegaTextAngle)) {
+    return 360 - vegaTextAngle;
+  }
+
+  return 0;
 }
 
 function convertAlignment(textAlign) {
@@ -143936,6 +143940,8 @@ function convertAlignment(textAlign) {
     case 'right':
       return 'end';
   }
+
+  return 'start';
 }
 
 function convertBaseline(baseline) {
@@ -143944,7 +143950,7 @@ function convertBaseline(baseline) {
       return 'center';
   }
 
-  return baseline;
+  return baseline || 'bottom';
 }
 
 var _default = markStager;
@@ -151762,7 +151768,7 @@ Object.defineProperty(exports, "__esModule", {
 exports.version = void 0;
 // Copyright (c) Microsoft Corporation. All rights reserved.
 // Licensed under the MIT license.
-const version = '1.6.6';
+const version = '1.6.7';
 exports.version = version;
 },{}],"vUvc":[function(require,module,exports) {
 "use strict";