The page of change password is not working in small screen widths of 320px. This is reported by a customer and i confirmed it in chrome developer console
The result is that the user click at save without a result because the button is under another elements and the footer is not responsive.
I was also able to confirm this on the iPhone 6. I've opened an internal case for this CPANEL-22808. I'll update here when it's been addressed or there's any new information.
The case for this was closed as of some changes in relation to cPanel v84. If you're still experiencing issues with this please let me know and I'll look into it further.