Button text is render twice.

I will review the patch #2.

Patch #2 applies smoothly and solves the button text rendering twice.
screenshots are attached for review.
hence shifting the status of the issue to RTBC.

Hi there. Thanks for the patch and review but I am afraid you wasted your time.

First, it looks like the theme style weren't properly applied. So it is either the wrong base theme or misconfiguration in theme.scss or styles weren't actually compiled.

Please check docs/subtheme-template.md for reference.
If everything is done in accordance with the doc and the problem still appears, then please provide steps to reproduce the error and reopen the issue.

Second, the provided patch removes Drupal's functional element. The button just won't work without it.

p.s. With proper configuration the button should look like this