Don't over-update fields with wrong information.

src/layouts/schedule/schedule.vue

@@ -1182,10 +1182,13 @@ export default {
                     this.$nextTick(() => {
                         this.$refs.datePicker.showAnotherMonth().then((moreSelectableDates) => {
                             // update all dates
-                            this.selectableDatesInshop.days =
+
-                                moreSelectableDates.inshopTimeSlotsData.days;
+                            // > CHLOE HERD 7/22 -- CASH-1207
-                            this.selectableDatesMobile.days =
+                            // > Do not update the available dates again here;
-                                moreSelectableDates.mobileTimeSlotsData.days;
+                            // > they have already been updated by `showAnotherMonth`.
+                            // > Doing so will likely add or remove dates,
+                            // > desyncing the schedule page and the date-picker.
+
                             this.setDisplayWaitList();
                         });
                     });