I'm trying to open a modeless window from an extension but I'm unable to remove the system border, following documentation I have to set systemchrome to none in the app.xml file but this file is not present.
Where can I set this value or is a different way to open modeless windows with extension look possible ?
You can't remove the chrome for extension windows.
(Hoping that we get this limitation removed for JS extensions…)
Thanks for your prompt answer.
That will be a problem
I need a floating window to interact with my extension and the modeless has not the best look, and it seems that I can't resize it.