The screen that appears when carrying out an "undo" includes a message box near the top, "The edit can be undone...". In this box there is now a line break between the "c" and "h" of the word "changes". (Desktop view, Monobook skin)
Description
Event Timeline
I don't see line break at IE11 (pictured) or any other browser.
However, my monitor's resolution is 1680 x 1050. @Noyster What is your monitor's resolution, and which browser?
Thanks for the screenshot, it's more clear. I can repro on Vector skin too.
This behavior is caused by a CSS rule, word-break: break-all;
Reference: https://developer.mozilla.org/en-US/docs/Web/CSS/word-break
It's set in https://en.wikipedia.org/wiki/MediaWiki:Common.css
/* break words if they will overflow the content box */ .fmbox > tbody > tr > .mbox-text { word-break: break-all; /* break all, because it's a table-cell, that can grow if we use break-word */ }
You could discuss the issue at https://en.wikipedia.org/wiki/Wikipedia:Village_pump_(technical)
It's a design community choice from the English Wikipedia, not a design rule from the Monobook skin or other MediaWiki component.
I am closing this task as invalid as it is about a problem in on-wiki content of a specific community and hence out of scope for tracking it in Wikimedia Phabricator.
For future reference, please include a link to reproduce when you report an issue. Thanks a lot! :)