[VisualStylesMode: Net11] The border line was interrupted for the ComboBox control when setting the RightToLeft as Yes in NET11 mode

[Zheng-Li01]

.NET version

.NET 11.0.100-preview.7.26365.114 + Private dlls built from Net11/Integration-3 branch of https://github.com/KlausLoeffelmann/winforms repo

Did it work in .NET Framework?

Not tested/verified

Did it work in any of the earlier releases of .NET Core or .NET 5+?

Not support, new feature of #14768

Issue description

The border line was interrupted for the ComboBox control when setting the RightToLeft as Yes

Steps to reproduce

1. Create a WinForms application targeting .NET 11
2. Set VisualStylesMode = VisualStylesMode.Net11
3. Add a ComboBox control on the Form1.cs[Design] page
4. Set the RightToLeft as Yes for the combobox1
5. Observer the border line for the combobox1

More info：
The issue also can reproduce when adding the Combobox contorl in TableLayoutPanel/FlowLayoutPanel container control

[KlausLoeffelmann]

Can you check, if this Design-time only or also at runtime?
Thanks!

[Zheng-Li01]

For the standalone Combobox control, which can reproduce on both Design time and runtime; when adding the Combobox into TableLayoutPanel/FlowlaytoutPanel, which only can reproduce on Design time as below screenshot.

[Zheng-Li01]

Tested the fix in .NET 11/Integration-4: #14792, the issue has been fixed as below screenshot.