I have the same issue with the pagination – super frustrating. I am going to use the temporary solution and have a few questions.
Do I need to back up the whole website or just your-wordpress-folder/wp-includes/canonical.php file?
Will I need to revert back to the original your-wordpress-folder/wp-includes/canonical.php after the wordpress hopefully fixes the bug?
What is the best resource to follow the official updates from the WordPress? There are not many updates on their official blog.