Greetings from Syncfusion.
We have analyzed your requirement, currently we don’t have the delete button support for SfAutoComplete inside the SfTextInputLayout. But we have logged a feature request on this, and it can be tracked through our feedback portal below.
This feature will be available on our any of the upcoming release.
If you have any more specification/suggestions to the feature request, you can add it as a comment in the portal.
Muneesh Kumar G.