Autoblocks, regular blocks, GlobalBlocking and TorBlock are among the cases to test for this. See T128855: Unformatted html within message about ip-block (for TOR users).
- Block a user
- The blocked user logs in and goes to Flow board to attempt to create a new topic.
- After new topic title and topic text is entered, clicking on 'Add topic' will display raw HTML:
<p> <b> We proceeded to lock your account or your IP address. </ b> </ p> <p> The blockade has carried out user <a href = "/ wiki / User: Etonkovidova" title = "User: Etonkovidova"> Etonkovidova </a>. The reason given is <i> testing </ i>. </ p> <ul> <li> Start of block: 19:19, December 10, 2015 </ li> <li> End of block: 23:00, December 10, 2015 </ li> <li> Account locked: ET55 </ li> </ ul> <p> <a can contact href="/wiki/Usuari:Etonkovidova" title="Usuari:Etonkovidova"> Etonkovidova </a> or one of the <a href = "/ w / index.php? title = Viquip% C3% A8dia: Administrators & amp; action = edit & amp; redlink = 1 "class =" new "title =" Wikipedia: Administrators (does not exist) "> </a> administrators to discuss it . </ p> <p> Note that you can not use this form to send email messages to any user, unless you have a valid email address registered in your <a href = "/ wiki / Special: Prefer% C3% A8ncies "title =" Special Preferences "> </a> user preferences and you have not been blocked. </ p> <p> Your current IP address is 188.8.131.52 and the identification number of the blockade is # 1. Please include these data in any queries you make. </ p>...
The message text comes from [[MediaWiki:Blockedtext]] e.g. https://test.wikipedia.org/wiki/MediaWiki:Blockedtext
Note: a blocked user is successfully blocked from all editing actions on Flow board, except 'Add topic'
2 more example screenshots, mostly to show more of the screen, and to compare 1 Flow with 1 wikitext. These are showing a user who was blocked, with the option checked for "Prevent this user from editing his own talk page while blocked".