diff --git a/calendar/js/app.js b/calendar/js/app.js
index 3aab8a9958..ef46e7b442 100644
--- a/calendar/js/app.js
+++ b/calendar/js/app.js
@@ -2396,6 +2396,8 @@ var CalendarApp = /** @class */ (function (_super) {
                 grid.iterateOver(function (widget) {
                     if (row_index >= value.length)
                         return;
+                    // Clear height to make sure there's correct calculations
+                    widget.div.css("height", "");
                     if (widget.set_show_weekend) {
                         widget.set_show_weekend(view.show_weekend(state.state));
                     }
diff --git a/calendar/js/app.ts b/calendar/js/app.ts
index 3001b7b2f2..1e9f18ddf3 100644
--- a/calendar/js/app.ts
+++ b/calendar/js/app.ts
@@ -2752,6 +2752,10 @@ class CalendarApp extends EgwApp
 				row_index = 0;
 				grid.iterateOver(function(widget) {
 					if(row_index >= value.length) return;
+
+					// Clear height to make sure there's correct calculations
+					widget.div.css("height","");
+
 					if(widget.set_show_weekend)
 					{
 						widget.set_show_weekend(view.show_weekend(state.state));