src/components/date/datepickerWithRange.vue

@@ -57,7 +57,7 @@ const flatPickerConfig = computed(() => ({
 	inline: true,
 	mode: 'range',
 	locale: {
-		firstDayOf7Days: weekStart,
+		firstDayOf7Days: weekStart.value,
 	},
 }))
 

src/views/tasks/ShowTasks.vue

@@ -97,8 +97,8 @@ export default {
 			const title = this.showAll
 				? this.$t('task.show.titleCurrent')
 				: this.$t('task.show.fromuntil', {
-					from: this.formatDateShort(this.dateFrom),
-					until: this.formatDateShort(this.dateTo)
+					from: this.format(this.dateFrom, 'PPP'),
+					until: this.format(this.dateTo, 'PPP')
 				})
 
 			this.setTitle(title)