https://en.wikipedia.org/wiki/MediaWiki:Tag-visualeditor-switched-description says that the edits start in the visual mode and switch to the wikitext mode. This is inaccurate: the edit might have started in the wikitext mode and switched to the visual editor, or the user may have changed back and forth several times.

Current text: "User started to edit using the visual editor, then changed to the wikitext editor."

Proposed text: "User switched between visual and wikitext modes while editing."