Unable to have an invisible non-breaking space

First of all, thanks for Classic Editor.

I know it’s possible to type HTML code like   to get a non-breaking space.

But what I whant is to get an invisible non-breaking space.

When I copy and paste an invisible non-breaking space from a basic editor like Notepad, WordPress’ Classic Editor strip it out and give me a regular space instead.

Is there a way to avoid this?

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EDIT1: Curiously, it’s possible to copy and paste an invisible thin non-breaking space whitout any change.

EDIT2: Just to be sure: I never use Classic Editor’s visible tab.

• This topic was modified 4 years, 10 months ago by norlam.
• This topic was modified 4 years, 10 months ago by norlam.
• This topic was modified 4 years, 10 months ago by norlam.
• This topic was modified 4 years, 10 months ago by norlam.
• This topic was modified 4 years, 10 months ago by norlam.
• This topic was modified 4 years, 10 months ago by norlam.