The Rocker has a button list for the time menu
static const struct button_mapping button_context_settings_time[] = {
{ ACTION_STD_PREV, BUTTON_LEFT|BUTTON_REL, BUTTON_LEFT },
// { ACTION_STD_PREVREPEAT, BUTTON_LEFT|BUTTON_REPEAT, BUTTON_LEFT },
{ ACTION_STD_NEXT, BUTTON_RIGHT|BUTTON_REL, BUTTON_RIGHT },
{ ACTION_STD_NEXTREPEAT, BUTTON_RIGHT|BUTTON_REPEAT, BUTTON_RIGHT },
{ ACTION_STD_CANCEL, BUTTON_LEFT|BUTTON_REPEAT, BUTTON_LEFT },
{ ACTION_STD_OK, BUTTON_SELECT|BUTTON_REL, BUTTON_SELECT },
{ ACTION_SETTINGS_INC, BUTTON_UP, BUTTON_NONE },
{ ACTION_SETTINGS_INCREPEAT,BUTTON_UP|BUTTON_REPEAT, BUTTON_NONE },
{ ACTION_SETTINGS_DEC, BUTTON_DOWN, BUTTON_NONE },
{ ACTION_SETTINGS_DECREPEAT,BUTTON_DOWN|BUTTON_REPEAT, BUTTON_NONE },
LAST_ITEM_IN_LIST
//LAST_ITEM_IN_LIST__NEXTLIST(CONTEXT_SETTINGS)
}; /* button_context_settings_time */
Have you tried holding left?
If not it is indeed a failure of the keymap on the rocker and I apologize