TokenizingTextBox won't hide PlaceholderText after all tokens replaced at once

[ShimizuTheLotus]

Describe the bug

After all tokens replaced, the token will still show its PlaceholderText.

Steps to reproduce

1. Input multi tokens in the TokenizingTextBox().
2. Ctrl + A select all of them.
3. type in, and when you type the first character the PlaceholderText won't be hidden.

Expected behavior

The PlaceholderText will be hidden.

Screenshots

This is an example token status.

This is how the bug looks like.

Code Platform

• UWP
• WinAppSDK / WinUI 3
• Web Assembly (WASM)
• Android
• iOS
• MacOS
• Linux / GTK

Windows Build Number

• Windows 10 1809 (Build 17763)
• Windows 10 1903 (Build 18362)
• Windows 10 1909 (Build 18363)
• Windows 10 2004 (Build 19041)
• Windows 10 20H2 (Build 19042)
• Windows 10 21H1 (Build 19043)
• Windows 10 21H2 (Build 19044)
• Windows 10 22H2 (Build 19045)
• Windows 11 21H2 (Build 22000)
• Other (specify)

Other Windows Build number

Windows 11 23H2 (Build 22635.3139)

App minimum and target SDK version

• Windows 10, version 1809 (Build 17763)
• Windows 10, version 1903 (Build 18362)
• Windows 10, version 1909 (Build 18363)
• Windows 10, version 2004 (Build 19041)
• Windows 10, version 2104 (Build 20348)
• Windows 11, version 22H2 (Build 22000)
• Other (specify)

Other SDK version

No response

Visual Studio Version

No response

Visual Studio Build Number

No response

Device form factor

No response

Additional context

No response

Help us help you

No, I'm unable to contribute a solution.

[Arlodotexe]

Generally, you can select just once token and start typing to reproduce the issue. If you don't press backspace first, the placeholder text stays underneath the next text.