>>I don't know if starting from last UT update, but I see that messages dissapear to the right, which force me to scroll horizontally.
>>
>>I've made and attached 2 pictures in my Windows 7 64bit with FireFox 45 (lates version) and Internet Explorer 11 and a 19" monitor (1280x1024).
>>
>>Now almost constantly an horizontal slider is on bottom on the page and even this slider is almost off the screen from the bottom, which makes too difficult to scroll horizontally (which is bad too in a web page).
>>
>>Edit:
>>The lower (horizontal) scrollbar only shows when the vertical slider shows, but if the message fits the screen, then no scrollbars are shown.
>>Because almost all messages are in threads, as far as a message have an answer makes both scrollbars visible and the text flowing to the right, up to double of the screen size sometimes!
>>
>>Hope this helps to fix it.
>
>The first message was a result of a user who decided to consider a part of the help as code, thus the PRE tag was inserted, and that of course, creating a very bad result. I removed the PRE tag from the three related messages. I understand the user did that because the help included a word expression between lower and greater signs. But, in that case, that should not have been used. Those messages should adjust accordingly to the required width.
>
>As for the second one, the minimum width required to display that message is over your available width. May I know the resolution you are working with and if the browser area could have been resized bigger or if it was at max?

I saw the same issue yesterday, and I'm seeing it today as well. I first noticed it today with Message#1634403 . As far as I can tell it does not include any PRE tags.

Like Fernando, the horizontal scroll bar when present is almost off the bottom of the page and very difficult to use, especially since I have task bar auto-hide enabled.

FireFox 45.0.1