Not a pre-sale question, actually, but it turned out that it takes to be the customer to post to other parts of the forum.
Are you interested in the bug reports for 5.2 RC1? If so, where they could be sent?
For example, I've ran into the following error:
An error has occurred while trying to handle your request and execution has been terminated. Please forward the above error code to the site administrator.The error code can be used by an administrator to lookup the full error message in the Administration Control Panel via “Logs » Errors”. In addition the error has been written to the log file located at */log/2019-12-15.txt and can be accessed with a FTP program or similar.Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_2) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/13.0.4 Safari/605.1.15Could not execute statement 'INSERT INTO wcf1_language (countryCode,languageName,languageCode) VALUES (?,?,?)'
This happens when I insert a string too long for the country code.