The "-" in "- Mozilla Firefox" appended to the browser tab's window name is broken in Firefox ESR 78.5.0
The "-" in "- Mozilla Firefox", which is appended to the browser tab's window name now uses wide charters in the Japanese version of Firefox ESR 78.5.0 windows-64bit, which was a ASCII character in prior versions. The English version stays unchanged though out all versions. It looks like recent changes has broken the uniformity of the window name across languages.
Affected: Firefox ESR 78.5.0 Japanese Version Windows-64bit build
Attached is a screenshot from Microsoft Visual Studio Spy++