Hi Andrew,
I've got a simmilar issue, regarding UltraToolbarsManager.

We are updating our companies app (which was a .NET Framework 4.7.1 Windows Forms Application) to .NET 6.0.

The application has a lot of Windows Forms user controls, which are inherited from a basic user control. There is a UltraToolbarsManager on the basic user control, which the inherited user controls are using to extend the context menu of the basic user control UltraToolbarsManager.

In our new .NET 6.0 application, in which we use the current Infragistics WinForms Release 21.2.46 via NuGet packages, everytime i do a minor change on one of the inherited user controls (such as resizing a UltraComboEditor), the VisualStudio 2022 Designer removes everything, which was related to the UltraToolbarsManager from the *.designer file, like the PopupMenuTools from the inherited user control context menu or the ButtonTools, which are used in the PopupMenuTool.

Can you tell me, if there exists a workaround to prevent the designer from deleting the UltraToolbarsManager related controls from the designer file?

Or alternatively, can you tell me, when you plan to add designer support in .NET 6.0 for the UltraToolbarsManager?