Combo Box touch events not firing

* .NET Core Version: 3.1.300
* Windows version: 10.0.18363
* Does the bug reproduce also in WPF for .NET Framework 4.8?: Yes

**Problem description:**

The problem is described fully on the following SO post: https://stackoverflow.com/questions/51840650/combo-box-touch-events-not-firing-in-windows-10-vs2017

Using touch select an item from Combo box, after selecting the item combo box close after a flickering.
This flickering is not observed using mouse clicks.

The condition of the problem is that the system disable press and hold for right clicking


**Actual behavior:**

Combo Box touch events not firing

**Expected behavior:**

We can receive the touch events from combo box

**Minimal repro:**

```xaml

A
B
C
D
E
F
G

```