While writing a new blog post on my WordPress blog, I noticed that it is converting '✓' (checkmark) to '?' (question mark). I am using the classic editor (not the block one).
I tried to enter the ✓ character in multiple ways like using the ✓
HTML entity also but as soon as I moved to the visual tab on the editor the character changed back to ?.
I read somewhere that commenting the following lines in wp-config.php fixes this issue.
//define('DB_CHARSET', 'utf8');
//define('DB_COLLATE', '');
In my case committing these two lines fixed the issue for this very blog post but all the older posts seem to be messed up.