Steps to reproduce:
- Launch Firefox.
- In the same tab, trigger multiple Info bars - the Default Browser Infobar and the Media Decode Error Infobar- An error occurred while decoding a media resource (details on how to trigger it in https://bugzilla.mozilla.org/show_bug.cgi?id=1695362#c7)
- Resize the window's browser to the minimum.
- Observe the space between the button and the text string.
The space between the text string and the button should be the same for both the Infobars.
The gap between the text string and the button is larger for the Infobar where the wrapped Infobar has only one row - Media decode Infobar in this case.
The issue is more noticeable on Mac OS than on Windows 10 and Ubuntu 20.04.