Focus lost on lookup window using C# how to automatically focus on lookup window?

I am upgrading a Visual Studio 2015 C# application to VS 2019. Everything is working with this one exception. I have added a lookup button onto a datagridview. In the 2015 version I can start typing numbers and when the lookup grid appears I can immediately start typing and grid will match the first number then the second and so on and so on. In the 2019 version I need to click in the lookup grid first and then I can start typing. I have checked every event and they all match between both versions. What else can I check to determine why I need to manually focus first on the lookup window before I start typing numbers?

        private void dgvViewJobLinker_CellContentClick(object sender, DataGridViewCellEventArgs e)
        {
            if (e.ColumnIndex == 0 && e.RowIndex >= 0)
            {

                using (frmLookupJob ViewAgenciesByJobsForm = new frmLookupJob("Job_Linker"))    /* Send down formname "Job_Number" so it will return job number not customer number */
                {
                    if (ViewAgenciesByJobsForm.ShowDialog(this) == DialogResult.OK)
                    {
                        ViewAgenciesByJobsForm.Show();
                        ViewAgenciesByJobsForm.Activate();
                        ViewAgenciesByJobsForm.Focus();
                        dgvViewJobLinker[1, dgvViewJobLinker.CurrentCell.RowIndex].Value = ViewAgenciesByJobsForm.CellValue;
                    }
                }
            }
        }