Fix for #1275

[ghost]

No description provided.

[stephengold]

@MeFisto94: since you opened issue #1275, I'd like you to please review this.

[MeFisto94]

Maybe we should phrase it like:

• "the LWJGL3 backend" (or only LWJGL3 without "the").
• "this method" instead of "the method"
• until after the application is stopped

The problem with stop() is that this actually is illegal as well, see the second part of #1275

[ghost]

"The LWJGL3" was obviously a typo.
I meant to say "the LWJGL3 backend", would you prefer this instead, or keep what you suggested?