Launch embed code replacement - Respect async (or sync) attribute

Within the Experience Platform Debugger, it is easy to replace the Launch embed code with a different one, but any time I do this, the default code is including the async keyword, while or websites have the embed code loaded in sync.

Therefore I always have to remove the "async" keyword in the embed code before I apply the replacement when I'm testing.

Would it be possible to have respect the sync/async way of loading of the current embed code as the default for replacement?