The list of the input sources are (partially) translated according to the language on Region & Language settings. without enabling show-all-sources key in org.gnome.desktop.input-sources, the available input sources is still too much. it's hard to find things out without filtering.

However filtering doesn't accept something in English if the desktop is running on non-English language and the translation is available. this bad behavior affects the usability, particularly for initial setup, because there are no default input sources to input their native language at first.

So please allow us to filter the input sources by both English and the native language.