Under new /experimental features i had the Attribute Group Selected.
I disabled this and the new attribute button works as expected.
Thank you for your info
Edit History
I only had default modules.
I disabled all modules and clicked new under attributes ...
JQMIGRATE: Migrate is installed with logging active, version 3.4.0 main.bundle.js:604 JQMIGRATE: 'ready' event is deprecated o @ main.bundle.js:604 setup @ main.bundle.js:604 add @ main.bundle.js:660 (anonymous) @ main.bundle.js:604 (anonymous) @ main.bundle.js:604 (anonymous) @ main.bundle.js:660 each @ main.bundle.js:649 each @ main.bundle.js:649 Se @ main.bundle.js:660 on @ main.bundle.js:660 (anonymous) @ ps_emailalerts.js:20Understand this warning main.bundle.js:604 JQMIGRATE: jQuery.fn.click() event shorthand is deprecated o @ main.bundle.js:604 (anonymous) @ main.bundle.js:604 V @ main.bundle.js:877 (anonymous) @ main.bundle.js:902 u @ main.bundle.js:660 c @ main.bundle.js:660 setTimeout (anonymous) @ main.bundle.js:660 l @ main.bundle.js:660 fireWith @ main.bundle.js:660 fire @ main.bundle.js:660 l @ main.bundle.js:660 fireWith @ main.bundle.js:660 ready @ main.bundle.js:660 q @ main.bundle.js:660Understand this warning main.bundle.js:604 JQMIGRATE: jQuery.fn.hover() is deprecated o @ main.bundle.js:604 (anonymous) @ main.bundle.js:604 (anonymous) @ main.bundle.js:2146 u @ main.bundle.js:660 c @ main.bundle.js:660 setTimeout (anonymous) @ main.bundle.js:660 l @ main.bundle.js:660 fireWith @ main.bundle.js:660 fire @ main.bundle.js:660 l @ main.bundle.js:660 fireWith @ main.bundle.js:660 ready @ main.bundle.js:660 q @ main.bundle.js:660Understand this warning main.bundle.js:604 JQMIGRATE: jQuery.fn.bind() is deprecated o @ main.bundle.js:604 (anonymous) @ main.bundle.js:604 (anonymous) @ admin.js?v=8.1.7:811 u @ main.bundle.js:660 c @ main.bundle.js:660 setTimeout (anonymous) @ main.bundle.js:660 l @ main.bundle.js:660 fireWith @ main.bundle.js:660 fire @ main.bundle.js:660 l @ main.bundle.js:660 fireWith @ main.bundle.js:660 ready @ main.bundle.js:660 q @ main.bundle.js:660Understand this warning main.bundle.js:604 JQMIGRATE: jQuery.fn.submit() event shorthand is deprecated o @ main.bundle.js:604 (anonymous) @ main.bundle.js:604 (anonymous) @ tools.js?v=8.1.7:749 u @ main.bundle.js:660 c @ main.bundle.js:660 setTimeout (anonymous) @ main.bundle.js:660 l @ main.bundle.js:660 fireWith @ main.bundle.js:660 fire @ main.bundle.js:660 l @ main.bundle.js:660 fireWith @ main.bundle.js:660 ready @ main.bundle.js:660 q @ main.bundle.js:660Understand this warning main.bundle.js:604 JQMIGRATE: jQuery.fn.change() event shorthand is deprecated o @ main.bundle.js:604 (anonymous) @ main.bundle.js:604 (anonymous) @ pagination.js?8.1.7:31 u @ main.bundle.js:660 c @ main.bundle.js:660 setTimeout (anonymous) @ main.bundle.js:660 l @ main.bundle.js:660 fireWith @ main.bundle.js:660 fire @ main.bundle.js:660 l @ main.bundle.js:660 fireWith @ main.bundle.js:660 ready @ main.bundle.js:660 q @ main.bundle.js:660Understand this warning new:1 <meta name="apple-mobile-web-app-capable" content="yes"> is deprecated. Please include <meta name="mobile-web-app-capable" content="yes">