(split off from T206554 by @alexhollender)
On English Wikipedia, when using the Vector skin, with the "Editing mode" preference set to "Remember my last editor", and the remembered last editor being the visual editor, clicking the "Edit" tab link will change its label to "Edit this page".
This is because we incorrectly use the 'edit' message, rather than 'vector-view-edit', and on English Wikipedia it is customized (compare https://en.wikipedia.org/wiki/MediaWiki:Edit vs https://en.wikipedia.org/wiki/MediaWiki:Edit/en). The customization dates to the days of yore, it was probably intended for MonoBook (where changing the text to make the link slightly larger is a reasonable decision).
| before clicking "Edit" | after clicking "Edit" | |
| normal |  |  |
| ?uselang=qqx |  |  |