Thanks for the answer. I did provide a screenshot of the html source code in chrome developer tools. https://ibb.co/vsNWZkf
As far as the console part of the developer tools goes, there are no JS errors. The HTML source code itself is corrupted (contains shor codes) as the screenshot shows.
For the website, yes it is not easy to reproduce the error and that is what is concerning me the most. It happens from time to time to some of the users with no obvious trigger.