when using the shortcode for the subscribe button (using the most recent beta, btw) the “subscribe” button does not have the same width as the cover behind it. Using the size=“big auto” option makes no difference.
when using the subscribe button widget everything works fine.
I am using the uncode wordpress theme, which has an elaborate content builder… might be a reason for the problem, yet it should not be, I guess.
here you see the difference on a single page: the first button is generated with the shortcode in a text widget, placed in a column; the second button is generated with a sidebar widget widget, placed in a column.
This is what it looks like in the backend.
let me know if I could provide you any more information.