Async loading combobox looses focus when clearing text

[nicolajb23]

Describe the bug
Async loading combobox looses focus when clearing text

To Reproduce
Steps to reproduce the behavior:

1. Have an async loading combobox
2. Select all the text and press backspace
3. input looses focus

Environment

• Blazority Version 0.9.0
• .NET Core Version 3.1