Is anyone experiencing the issue, where the email link provided in the communication from a thread response does not work correctly?

On our community when a user responds to a thread, an email communication is sent (pretty standard).

However, since a recent update, the URL which is included in the email communication does not always take the user back to the thread, but provides a 'NOT Found' error.

An example of the url is below:

By removing the last number 801744, from the url brings the user to the whole thread and not only the response.