MacOS, MacBook-Pro, Touch-Bar – Esc Button Disappeared from Touch Bar

There is a possible reason why this may be:

You've installed the third-party product Webroot SecureAnywhere.

Webroot SecureAnywhere is made by Webroot Inc. When this software is installed on your Mac using its default settings, you might notice these symptoms:

Text that you dictate doesn't appear as expected. You don't see any accented characters when you hold down a letter key. You can't select items such as emoji in the Touch Bar of your 2016 MacBook Pro.

Follow these steps to fix the issue:

Click the Webroot SecureAnywhere icon in the menu bar. Choose Pause Secure Keyboard Entry.

I found this issue with the touchbar not showing anything happens only if you've file vault on.

After booting my system I just assumed it was at the login screen and asking for password. After entering the password it logged me in and the touchbar controls appeared again.