# Rendering Changes in 15.0.0

> Make sure that you are using a [compatible Telerik CSS theme](https://www.telerik.com/blazor-ui/documentation/styling-and-themes/overview#compatibility-and-maintenance) every time you [upgrade Telerik UI for Blazor](https://www.telerik.com/blazor-ui/documentation/upgrade/overview).

## Scheduler

* The popup edit form has a new simpler and cleaner horizontal layout.
* The recurrence management UI is moved from the main edit form to a separate modal Dialog that shows up on button click in the main edit form. The recurrence Dialog has a CSS class `.k-scheduler-recurrence-dialog`.
* The default [Scheduler toolbar](https://www.telerik.com/blazor-ui/documentation/components/scheduler/toolbar) has a **New Event** button that opens the popup edit form on the first date from the current view.
* The `SchedulerToolBarNavigationTool` renders [flat buttons instead of solid buttons](https://www.telerik.com/blazor-ui/documentation/components/button/appearance).
* The [`SchedulerToolBarViewsTool`](https://www.telerik.com/blazor-ui/documentation/components/scheduler/toolbar) renders as a [SegmentedControl](https://www.telerik.com/blazor-ui/documentation/components/segmentedcontrol/overview) on wide screens and as a [DropDownButton](https://www.telerik.com/blazor-ui/documentation/components/dropdownbutton/overview) on narrow screens.
* The appointment delete button is moved to the bottom of the popup edit form.
* The appointment recurrence and exception icons are moved to the bottom-right.
* The overflow button in the [Month view](https://www.telerik.com/blazor-ui/documentation/components/scheduler/views/month) shows how many appointments overflow, instead of three dots.

## See Also

* [Use best practices when overriding theme styles](https://www.telerik.com/blazor-ui/documentation/styling-and-themes/override-theme-styles#best-practices)
* [Breaking changes in Telerik UI for Blazor 15.0.0](https://www.telerik.com/blazor-ui/documentation/upgrade/breaking-changes/15-0-0)