Updated CSS Selector help (markdown)

CSS-Selector-help.md

@@ -33,3 +33,9 @@ filter: `//h3/parent::a//@href`
 ```
 //img//@src
 ```
+
+# xPath and non-latin text getting garbled
+
+`xpath:` type filters and non-UTF8 is incompatable, If you see that your text is garbled `Нема планираних искључења.` becomes `Нема Ð¿Ð»Ð°Ð½Ð¸Ñ€Ð°Ð½Ð¸Ñ Ð¸ÑÐºÑ™ÑƒÑ‡ÐµÑšÐ°.` then you should convert your xPath filter to CSS https://extendsclass.com/xpath-to-css.html
+
+For example [#1546](https://github.com/dgtlmoon/changedetection.io/issues/1546)