diff --git a/src/core/evaluator.js b/src/core/evaluator.js
index d72cba2dd..2932523fd 100644
--- a/src/core/evaluator.js
+++ b/src/core/evaluator.js
@@ -1366,10 +1366,10 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
 
         if (!font.vertical) {
           textChunk.lastAdvanceWidth = width;
-          textChunk.width += width * textChunk.textAdvanceScale;
+          textChunk.width += width;
         } else {
           textChunk.lastAdvanceHeight = height;
-          textChunk.height += Math.abs(height * textChunk.textAdvanceScale);
+          textChunk.height += Math.abs(height);
         }
 
         return textChunk;
@@ -1393,6 +1393,10 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
         if (!textContentItem.initialized) {
           return;
         }
+
+        // Do final text scaling
+        textContentItem.width *= textContentItem.textAdvanceScale;
+        textContentItem.height *= textContentItem.textAdvanceScale;
         textContent.items.push(runBidiTransform(textContentItem));
 
         textContentItem.initialized = false;
@@ -1545,10 +1549,8 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
                   advance = items[j] * textState.fontSize / 1000;
                   var breakTextRun = false;
                   if (textState.font.vertical) {
-                    offset = advance *
-                      (textState.textHScale * textState.textMatrix[2] +
-                       textState.textMatrix[3]);
-                    textState.translateTextMatrix(0, advance);
+                    offset = advance;
+                    textState.translateTextMatrix(0, offset);
                     breakTextRun = textContentItem.textRunBreakAllowed &&
                                    advance > textContentItem.fakeMultiSpaceMax;
                     if (!breakTextRun) {
@@ -1557,10 +1559,8 @@ var PartialEvaluator = (function PartialEvaluatorClosure() {
                     }
                   } else {
                     advance = -advance;
-                    offset = advance * (
-                      textState.textHScale * textState.textMatrix[0] +
-                      textState.textMatrix[1]);
-                    textState.translateTextMatrix(advance, 0);
+                    offset = advance * textState.textHScale;
+                    textState.translateTextMatrix(offset, 0);
                     breakTextRun = textContentItem.textRunBreakAllowed &&
                                    advance > textContentItem.fakeMultiSpaceMax;
                     if (!breakTextRun) {
diff --git a/test/pdfs/.gitignore b/test/pdfs/.gitignore
index aa088e3d4..c4abf5721 100644
--- a/test/pdfs/.gitignore
+++ b/test/pdfs/.gitignore
@@ -267,3 +267,4 @@
 !annotation-choice-widget.pdf
 !zero_descent.pdf
 !operator-in-TJ-array.pdf
+!issue7878.pdf
diff --git a/test/pdfs/issue7878.pdf b/test/pdfs/issue7878.pdf
new file mode 100644
index 000000000..13fcbbfb4
Binary files /dev/null and b/test/pdfs/issue7878.pdf differ
diff --git a/test/test_manifest.json b/test/test_manifest.json
index 5d669044e..938d9a539 100644
--- a/test/test_manifest.json
+++ b/test/test_manifest.json
@@ -3324,5 +3324,12 @@
        "link": false,
        "rounds": 1,
        "type": "text"
+    },
+    {  "id": "issue7878",
+       "file": "pdfs/issue7878.pdf",
+       "md5": "59194e30037e8c09ae846ddd0ace4c81",
+       "link": false,
+       "rounds": 1,
+       "type": "text"
     }
 ]