Safari is not considering height of container

[spandl]

I am running into an issue where Safari isn't considering the height of the box, but only the width.
For very short labels this will render the font much larger. In Firefox or Chrome, the result is correct.

In the CSS, I specify height of box, as well as line-height.

Any idea, what to adapt to make this work, or is this a known issue?

[Zocum]

I am experiencing the same issue. Might just delete the package and implement a CSS solution.