Minor Annoyance since many Truenas revisions when composing a custon schedule.
English (en) locale:
All boxes are visible.
German (de) locale:
The boxes for Friday and Saturday are hidden and non-selectable, because the long weekday names are used here (Sonntag, Montag, Dienstag, …), and not the short ones (So, Mo, Di, Mi, Do, Fr, Sa).
Please change that.