Can't encrypt text with horizontal rules?

[Luthien 3]

Evernote recommends the "encrypt text" function as a replacement for password protected notebooks (which... I mean, fine, I guess, it's their software and they can do what they like with it). But it also autocorrects --- to a hard line. I like this--I like the horizontal line to break up sections of a long note. 

But the encrypt feature is greyed out whenever a horizontal line is selected. Is this a bug or is this intended?

[Atul Mishra 14]

Only text within the note editor can be passphrase protected. Not the horizontal line, table, image, pdf, etc. 

[DTLow 5,728]

On 6/19/2019 at 7:50 AM, Luthien said:

Evernote recommends the "encrypt text" function as a replacement for password protected notebooks

I don't know about "password protected notebooks", but I use encryption to protect my sensitive documents
Evernote has a text encryption feature, and I use encrypted attachments

>>But it also autocorrects --- to a hard line. 

You can override this