"Plus" button is not centered

[talyguryn]

Firefox 65, macOS 10.13.6 / Win 7

[akash-mitra]

Just some additional info -

The button is centered in chrome. But not centered in Firefox.

The translate values in ce-toolbar__plus is different between chrome (transform: translate3d(0px, calc(-50% + 10px), 0px)) and firefox (transform: translate3d(0px, calc(-50% + 22px), 0px))

In chrome, the block has a height of 24px - which I believe is coming from line-height: 1.7 - but in firefox the block height is zero unless you start writing something.

Below is a screenshot from chrome Notice 45px (24px + 21px padding) content height (light blue color)

Below is a screenshot from Firefox, the content height is zero (only 21px from padding).

[neSpecc]

Resolved in 2.16.1