https://invisioncommunity.com/4guides/themes-and-customizations/css-framework/miscellaneous-r99/

Not used much anymore, but I also saw it failing on my site in the downloads app. 

Yep. I've reported this bug before, and even report the guide itself. Looks like they haven't gotten around to fix it still. 😋

caused by overflow: hidden;

Thanks @opentype

Despite an easy solution (changing the overflow), it's a bit of a tough bug to fix because buttons are currently designed to have truncated text if they're too wide for their parent.

I'll potentially change this in a future version since it's not really ideal to truncate a button/CTA, but I'll fix this issue in the next update with the following code since it's less likely to break existing button layouts:

.ipsButton:has(.ipsNotificationCount){
    overflow: visible;
}