add fix to pretix-control as well

This reverts commit 10477785c38a0e1d566e6f72b3b7abef2be02d4a.

src/pretix/static/pretixcontrol/js/ui/main.js

@@ -196,7 +196,15 @@ var form_handlers = function (el) {
         }
         if ($(this).is('[data-is-payment-date]'))
             opts["daysOfWeekDisabled"] = JSON.parse($("body").attr("data-payment-weekdays-disabled"));
-        $(this).datetimepicker(opts);
+        $(this).datetimepicker(opts).on("dp.hide", function() {
+            // when min/max is used in datetimepicker, closing and re-opening the picker opens at the wrong date
+            // therefore keep the current viewDate and re-set it after datetimepicker is done hiding
+            var $dtp = $(this).data("DateTimePicker");
+            var currentViewDate = $dtp.viewDate();
+            window.setTimeout(function () {
+                $dtp.viewDate(currentViewDate);
+            }, 50);
+        });
         if ($(this).parent().is('.splitdatetimerow')) {
             $(this).on("dp.change", function (ev) {
                 var $timepicker = $(this).closest(".splitdatetimerow").find(".timepickerfield");

src/pretix/static/pretixpresale/js/ui/main.js

@@ -82,7 +82,15 @@ var form_handlers = function (el) {
                     Math.abs(+new Date(opts.minDate) - new Date()) < Math.abs(+new Date(opts.maxDate) - new Date())
             ) ? opts.minDate : opts.maxDate;
         }
-        $(this).datetimepicker(opts);
+        $(this).datetimepicker(opts).on("dp.hide", function() {
+            // when min/max is used in datetimepicker, closing and re-opening the picker opens at the wrong date
+            // therefore keep the current viewDate and re-set it after datetimepicker is done hiding
+            var $dtp = $(this).data("DateTimePicker");
+            var currentViewDate = $dtp.viewDate();
+            window.setTimeout(function () {
+                $dtp.viewDate(currentViewDate);
+            }, 50);
+        });
         if ($(this).parent().is('.splitdatetimerow')) {
             $(this).on("dp.change", function (ev) {
                 var $timepicker = $(this).closest(".splitdatetimerow").find(".timepickerfield");