To reduce the number of rows in Commons’ `templatelinks` table, we moved some styles from [Module:Information/styles.css](https://commons.wikimedia.org/wiki/Module:Information/styles.css) to [MediaWiki:Filepage.css](https://commons.wikimedia.org/wiki/MediaWiki:Filepage.css). (See the [module talk page](https://commons.wikimedia.org/wiki/Module_talk:Information#Proposal:_Move_template_styles_to_site-wide_CSS) and the [styles talk page](https://commons.wikimedia.org/wiki/Module_talk:Information/styles.css) for more information.) However, it turns out that `Filepages.css` isn’t loaded when previewing edits to file pages (when not using VisualEditor), so the Information tables currently have broken styles there – [example](https://commons.wikimedia.org/w/index.php?title=File:CSD_Berlin_2019_-_Lucas_Werkmeister_-_24_-_Bi,_Pan,_Ace_Flags.jpg&action=submit):
{F41751956}
(It’s worth noting that it looks fine [in VisualEditor](https://commons.wikimedia.org/w/index.php?title=File%3ACSD_Berlin_2019_-_Lucas_Werkmeister_-_24_-_Bi%2C_Pan%2C_Ace_Flags.jpg&veaction=editsource):)
{F41751964}
IMHO we should fix this by making MediaWiki load `Filepage.css` when previewing file edits.