diff --git a/unpacked/jax/output/HTML-CSS/config.js b/unpacked/jax/output/HTML-CSS/config.js
index f2672d74e..d8b61805d 100644
--- a/unpacked/jax/output/HTML-CSS/config.js
+++ b/unpacked/jax/output/HTML-CSS/config.js
@@ -24,7 +24,7 @@
 
 MathJax.OutputJax["HTML-CSS"] = MathJax.OutputJax({
   id: "HTML-CSS",
-  version: "2.1.1",
+  version: "2.1.2",
   directory: MathJax.OutputJax.directory + "/HTML-CSS",
   extensionDir: MathJax.OutputJax.extensionDir + "/HTML-CSS",
   autoloadDir: MathJax.OutputJax.directory + "/HTML-CSS/autoload",
diff --git a/unpacked/jax/output/HTML-CSS/jax.js b/unpacked/jax/output/HTML-CSS/jax.js
index 52bfa7737..0ed956ac5 100644
--- a/unpacked/jax/output/HTML-CSS/jax.js
+++ b/unpacked/jax/output/HTML-CSS/jax.js
@@ -2621,7 +2621,14 @@
 	  math = HTMLCSS.Measured(html,box);
 	}
 	HTMLCSS.placeBox(box,0,0);
-        stack.style.width = Math.round(HTMLCSS.unEm(stack.style.width)*this.em)+"px"; // get width right if minimum font size is set
+        //
+        //  Get width right if minimum font size is set:
+        //    Round to nearest pixel (plus a small amount), and convert back to outer-em's.
+        //    Add the width to the span (outside the MathJax class, so uses outer em size,
+        //    which makes it work even when minimum font size is in effect).
+        //
+        span.style.width = HTMLCSS.Em((Math.round(math.bbox.w*this.em)+.25)/HTMLCSS.outerEm);
+        span.style.display = "inline-block"; stack.style.width = "";
 	//
 	//  Adjust bbox to match outer em-size
 	// 
diff --git a/unpacked/jax/output/NativeMML/config.js b/unpacked/jax/output/NativeMML/config.js
index 86d51ad2d..fd7af3031 100644
--- a/unpacked/jax/output/NativeMML/config.js
+++ b/unpacked/jax/output/NativeMML/config.js
@@ -24,7 +24,7 @@
 
 MathJax.OutputJax.NativeMML = MathJax.OutputJax({
   id: "NativeMML",
-  version: "2.1",
+  version: "2.1.1",
   directory: MathJax.OutputJax.directory + "/NativeMML",
   extensionDir: MathJax.OutputJax.extensionDir + "/NativeMML",
   
diff --git a/unpacked/jax/output/NativeMML/jax.js b/unpacked/jax/output/NativeMML/jax.js
index e47e45304..87b237d5c 100644
--- a/unpacked/jax/output/NativeMML/jax.js
+++ b/unpacked/jax/output/NativeMML/jax.js
@@ -69,6 +69,7 @@
       }
     },
     settings: HUB.config.menuSettings,
+    ex: 1, // filled in later
     
     Config: function () {
       this.SUPER(arguments).Config.call(this);
@@ -205,6 +206,7 @@
           if (ex === 0 || ex === "NaN") {ex = this.defaultEx; mex = this.defaultMEx}
           scale = (mex > 1 ? ex/mex : 1) * this.config.scale;
           scale = Math.floor(Math.max(this.config.minScaleAdjust/100,scale));
+          jax.NativeMML.ex = ex;
         } else {scale = 100}
         jax.NativeMML.fontSize = scale+"%";
       }
@@ -232,6 +234,7 @@
       var span = document.getElementById(jax.inputID+"-Frame"),
 	  container = span.firstChild, mspan = container.firstChild;
       span.style.fontSize = jax.NativeMML.fontSize;
+      this.ex = jax.NativeMML.ex || this.defaultEx;
       //
       //  Convert to MathML (if restarted, remove any partial math)
       //
@@ -615,7 +618,13 @@
         //  parent element to match.  Even if we set the <math> width properly,
         //  it doesn't seem to propagate up to the <span> correctly.
         //
-        if (nMML.widthBug) {parent.style.width = math.firstChild.scrollWidth+"px"}
+        if (nMML.widthBug) {
+          //
+          //  Convert size to ex's so that it scales properly if the print media
+          //    has a different font size.
+          //
+          parent.style.width = (math.firstChild.scrollWidth/nMML.ex).toFixed(3) + "ex";
+        }
       }
     });