diff --git a/src/core/fonts.js b/src/core/fonts.js
index 6f8d60b319f10..890e4ca293070 100644
--- a/src/core/fonts.js
+++ b/src/core/fonts.js
@@ -1319,11 +1319,12 @@ var Font = (function FontClosure() {
       let fontName = name.replace(/[,_]/g, "-").replace(/\s/g, "");
       var stdFontMap = getStdFontMap(),
         nonStdFontMap = getNonStdFontMap();
-      var isStandardFont =
-        !!stdFontMap[fontName] ||
-        !!(nonStdFontMap[fontName] && stdFontMap[nonStdFontMap[fontName]]);
-      fontName = stdFontMap[fontName] || nonStdFontMap[fontName] || fontName;
+      const isStandardFont = !!stdFontMap[fontName];
+      const isMappedToStandardFont = !!(
+        nonStdFontMap[fontName] && stdFontMap[nonStdFontMap[fontName]]
+      );
 
+      fontName = stdFontMap[fontName] || nonStdFontMap[fontName] || fontName;
       this.bold = fontName.search(/bold/gi) !== -1;
       this.italic =
         fontName.search(/oblique/gi) !== -1 ||
@@ -1334,9 +1335,9 @@ var Font = (function FontClosure() {
       this.black = name.search(/Black/g) !== -1;
 
       // if at least one width is present, remeasure all chars when exists
-      this.remeasure = Object.keys(this.widths).length > 0;
+      this.remeasure = !isStandardFont && Object.keys(this.widths).length > 0;
       if (
-        isStandardFont &&
+        (isStandardFont || isMappedToStandardFont) &&
         type === "CIDFontType2" &&
         this.cidEncoding.startsWith("Identity-")
       ) {
diff --git a/test/pdfs/.gitignore b/test/pdfs/.gitignore
index 6b7ae9e9a13d9..91665f7eb4bff 100644
--- a/test/pdfs/.gitignore
+++ b/test/pdfs/.gitignore
@@ -357,6 +357,7 @@
 !issue6298.pdf
 !issue6889.pdf
 !bug1001080.pdf
+!bug1671312_reduced.pdf
 !issue6108.pdf
 !issue6113.pdf
 !openoffice.pdf
diff --git a/test/pdfs/bug1671312_reduced.pdf b/test/pdfs/bug1671312_reduced.pdf
new file mode 100644
index 0000000000000..3242c303b4ab5
Binary files /dev/null and b/test/pdfs/bug1671312_reduced.pdf differ
diff --git a/test/test_manifest.json b/test/test_manifest.json
index 19a428235dfea..bcbdbb8b3eb48 100644
--- a/test/test_manifest.json
+++ b/test/test_manifest.json
@@ -2259,6 +2259,12 @@
        "link": false,
        "type": "text"
     },
+    {  "id": "bug1671312_reduced",
+       "file": "pdfs/bug1671312_reduced.pdf",
+       "md5": "db13fe3f03a7d0bd0e248f5c2bcb2a5d",
+       "rounds": 1,
+       "type": "eq"
+    },
     {  "id": "issue7020",
        "file": "pdfs/issue7020.pdf",
        "md5": "93b464e21c649e64ae92eeafe99fc31b",