2 changed files with 2 additions and 2 deletions
--- a/bits/66_wscommon.js
+++ b/bits/66_wscommon.js
@ -56,7 +56,7 @@ function get_cell_style_csf(cellXf) {
    }


-    return s;
+    return JSON.parse(JSON.stringify(s));
  }
  return null;
 }
--- a/xlsx.js
+++ b/xlsx.js
@ -7497,7 +7497,7 @@ function get_cell_style_csf(cellXf) {
    }


-    return s;
+    return JSON.parse(JSON.stringify(s));
  }
  return null;
 }