After after update to Telerik UI for ASP.NET AJAX 2026.2.708 we have problem with RadPersistenceManager1.LoadState() metod.
We use custom StorageProvider for RadPersistenceManager that implements the IStateStorageProvider interface.

Everything works great on version Telerik UI for ASP.NET AJAX 2026.2.519 (2026 Q2).

RadGrid aggregates are not persisted by Persistence Framework

#843691

RadPersistenceFramework stores some of the RadPivotGrid/RadGrid settings using fully qualified DLL name which causes a problem when loading them in a project using a newer version of the Telerik.Web.UI assembly.

In case where a user tries to load persisted settings of RadTileList on initial load (!IsPostBack) the RadTileList is not initialized correctly

Reproduced on the online demo with AllowMultiColumnSorting enabled on the MasterTableView.
http://demos.telerik.com/aspnet-ajax/persistence-framework/examples/custom-storage-provider/defaultcs.aspx

Forum post: http://www.telerik.com/community/forums/aspnet-ajax/persistence-framework/radpersistencemanagerproxy-childpages-controls-can-t-have-same-name.aspx