Describe the bug
I have an issue with flutter and visual studio code were the UI Guides don't show when I am writing my code but only show when I go to another file and then go back to the file I was editing. I have the Preview Flutter UI Guides setting on and have tried toggling the Custom Tracking and the problem is still not fixed. I also tried it on a MacOS machine and a Windows machine and the same unexpected behaviour happens. Please let me know if you need anything such as screenshots, screen recordings or any other info.

To Reproduce
Steps to reproduce the behavior:

1. Enable the 'Preview Flutter UI Guides setting
2. Restart VS Code
3. Write anything that would prompt the UI Guides to show up
4. Go to settings without changing anything
5. Go back the file you were editing

Screen recording
Please feel free to skim through the video. What the video shows is that the UI Guides don't show on saving or typing but only show when I go to the settings, then back to the document. They even show if I don't save the document but go to the settings page then back.

Expected behavior
Similar to the behaviour in android studio, the UI guides should show up in the same window when I type the line, save, etc. I have format on type and format on save on and the issue still occurs.

Versions (please complete the following information):

• VS Code version:
• Dart extension version: v3.18.1
• Dart SDK version: 2.12.0-204.0.dev
• Flutter SDK version: 1.26.0-2.0.pre.275