Fixed by [Bug #18964]

file.c

@@ -4090,9 +4090,6 @@ static VALUE
 str_shrink(VALUE str)
 {
     rb_str_resize(str, RSTRING_LEN(str));
-    // expand_path on Windows can sometimes mutate the string
-    // without clearing its coderange
-    ENC_CODERANGE_CLEAR(str);
     return str;
 }