InputGroup buttons on Firefox/Safari

[baelene]

Hi,

There are issues with the input group on FireFox 59.0.1 and Safari 11.1. The icons are not correct (https://www.primefaces.org/primeng/#/inputgroup). See the screenshots in attachments.

Best regards
Eric

https://www.dropbox.com/s/6chw6knp60lcc ... x.png?dl=0
https://www.dropbox.com/s/o73yclgtpjlvh ... i.png?dl=0