FAQ and Troubleshooting

What to try first if something doesn't work
Force the browser to reload the content when using the URL in a link
The redirection always goes to the front page
The redirection doesn't seem to find the post, but I'm sure that it is there
The random parameter redirects always to the same post
Are sticky posts treated as normal posts?
What if more than one post match the criteria (e.g. two have the same comment_count)?
Since Wordpress version 4.8, the shortcodes in the widgets stopped working correctly
Which URL can serve as the base?
Where do I find the IDs of tags, posts or categories?