v3.5.0 CheckComboBox只能点击下拉区域才显示数据 #1771
Description
Describe the bug
只有点击方框内的区域才可以显示下拉数据，点击左侧显示区域的没有反应。但是3.4.0-release版本无此现象。
Steps to reproduce the bug
HandyControl-v3.5.0-Release CheckComboBox
Expected behavior
No response
Screenshots
No response
NuGet package version
HandyControl 3.5.1
IDE
Visual Studio 2022
Framework type
.Net 8.0
Windows version
Windows 11 (22000)
Additional context
No response