Unwanted column is part of index in generated DBContext

Question

I have created Web API core project and generated entity framework core related components as detailed in the article here

It generated all the entities properly, but few indexes were created with an extra column. Here is an example

entity.HasIndex(e => new { e.Column1, e.Column2, e.Column3 })
                    .HasName("ix_Table1_Column2_Column3"); 

In the above example, column1 is not actually part of index when i checked DB directly. I am puzzled as to what is causing this issue.

This presence of unwanted column is causing below exception.

An exception of type 'System.InvalidOperationException' occurred in Microsoft.EntityFrameworkCore.dll but was not handled in user code

Additional information: The indexes {'Column1', 'Column2', 'Column3'} on 'Table1' and {'Column2', 'Column3'} on 'Table1' are both mapped to 'able1.IX_Column2_Column2' but with different columns ({'Column1', 'Column2', 'Column3'} and {'Column2', 'Column3'}).

Any help is much appreciated. Thanks in advance!