Hello @Mat Powers ,
Welcome to Microsoft Q&A forum.
You may try a workaround currently:
Right-click the angular app(not webapi) => select Set as Startup Project
=> Go to the Start button drop down => select Chrome or other browser for example localhost (Chrome)
=> click Start to run the project => stop debugging => Go to the Start button drop down => Configure Startup Projects… => Common Properties => Startup Project => select Multiple startup projects => Apply => OK => click Start to run your project again => check if it starts with correct web browser.
Sincerely,
Tianyu
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