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This affects at least Firefox. When a message has an inline codeblock containing a long string of tabs this causes the chat window to have a horizontal scrollbar and to scroll spontaneously left and right as new messages appear.

This does not happen when messages use fixed font to create code blocks.


Since the chat sandbox was difficult to test in due to already having the problem, I've tested this in a new room and confirmed that the problem does not happen when pasting in a long string of tabs after 4 spaces (to create a code block). It only happens when enclosing a long string of tabs in backticks to create inline code.

  • For reference, the name was 0<28 tabs>'. Also, it made the user's name unpingable (though replies worked). I'm fairly certain this was chat removing repeated whitespace thouhg. – Riker Apr 22 '17 at 18:39
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    Personally, if tabs are to be allowed in usernames, I think they should be handled as spaces are: autocompletion of a username with tabs should strip the tabs. – Dennis Apr 22 '17 at 18:47
  • Furthermore this problem does affect the chat transcript as well – 1000000000 Apr 22 '17 at 18:50
  • Chat transcript for reference: chat.stackexchange.com/transcript/message/36882823#36882823 – 1000000000 Apr 22 '17 at 18:56
  • This is status-norepro. – EKons Apr 22 '17 at 18:59
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    A bug report for the discrepancy between the tab completion of the username and the pingable username has been posted meta.stackexchange.com/questions/295060/… – 1000000000 Apr 22 '17 at 19:36

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