The height of the "DropDown" list for the combobox control can't be reset default height after called the " comboBox1.Items.Clear();" method

OS : RS4 X64+.Net 4.8.03316 VS : Dev16 d16.0stg 16.0 Preview 3 28505.103

More info:

1. This issue can reproduce from VS Dev10 to Dev16.
2. This issue can't reproduce when adding the following code to Form1.Designer.cs.

comboBox1.Items.AddRange(new object[] { "a", "b", "c", "d", "e" });
comboBox1.Items.Clear();

Steps to reproduce:

1. Create a Winforms application.
2. Drag a Combobox control to form designer.
3. Add the following code to Form1.cs.

private void Form1_Load(object sender, EventArgs e)
       {
comboBox1.Items.AddRange(new object[] { "a", "b", "c", "d", "e" });
          comboBox1.Items.Clear();
}

Actual: The height of the "DropDown" list for the combobox control can't be reset default height after called the " comboBox1.Items.Clear();" method.

Expected: The height of the "DropDown" list for the combobox control should be reset default height after called the " comboBox1.Items.Clear();" method.