Blazor - DropDown cutted out. How to align on the left?

Hello Reinhold,

You can change this behavior using the DxComboBox<TData, TValue>.DropDownWidthMode property. Refer to the following help article to see how to apply customization: How to: Customize a Built-in Property Editor (Blazor). For example, the code may be the following:

C#
using System;
using DevExpress.Blazor;
using DevExpress.ExpressApp;
using DevExpress.ExpressApp.Blazor.Editors;
using DevExpress.ExpressApp.Blazor.Editors.Adapters;
// ...
namespace SolutionName.Module.Blazor.Controllers {
    public class CustomizeLookupPropertyEditorController : ViewController<DetailView> {
        protected override void OnActivated() {
            base.OnActivated();
            View.CustomizeViewItemControl<LookupPropertyEditor>(this, propertyEditor => {
                if(propertyEditor.Control is DxComboBoxAdapter<YourClass, YourClass> adapter) {
                    adapter.ComponentModel.DropDownWidthMode = DropDownWidthMode.EditorWidth;
                }
            });
        }
    }
}

I hope you find this information helpful.

P.S.
Can we make this ticket public?

Thanks,
Ilya P