diff --git a/thoughts/templates/thoughts/index.html b/thoughts/templates/thoughts/index.html
index 2d9997f..e146aaa 100644
--- a/thoughts/templates/thoughts/index.html
+++ b/thoughts/templates/thoughts/index.html
@@ -151,7 +151,7 @@
                         showMoreButton.parentNode.removeChild(showMoreButton);
                         // Show the extended text
                         extended.classList.remove("hidden");
-                    })
+                    });
                     main.appendChild(showMoreButton);
                 }
 
diff --git a/thoughts/templates/thoughts/post.html b/thoughts/templates/thoughts/post.html
index ed4fb5c..a0d417f 100644
--- a/thoughts/templates/thoughts/post.html
+++ b/thoughts/templates/thoughts/post.html
@@ -113,6 +113,13 @@
     for (const box of textboxes) {
         // Set the initial heights of the boxes
         updateBoxHeight(box);
+        // This works fine in Blink, but in Firefox this fails,
+        //  more often on a complex page (pretty much every time on this page;
+        //  less often if I start commenting stuff out, but it still happens)
+        // So after the first render this re-runs the updateBoxHeight to make sure.
+        // This does lead to a flash of short-boxes, but it's better than nothing.
+        setTimeout(updateBoxHeight.bind(null, box), 0);
+        // Add an event listener to update the box height on key press
         box.addEventListener("input", evt => updateBoxHeight(box));
 
         // Allow pasting images into either text box