VSCode open a new file in preview mode by default.
When you open a file, and then, open another file. The former file will be OVERRIDE!
Very Annoying!
How to determine if a file is preview mode? See the file name⬇️
The name344_reverserString.js
is Italic so that it is under preview mode
Changing ways:
Enable Preview
in SettingsReference
https://stackoverflow.com/questions/38713405/open-files-always-in-a-new-tab