Multiple required fields on multiple tabs do no trigger frontend validation

I believe this is now also fixed in 4.x. Apologies if I have gotten it wrong and should be re-opened!

Here is a gif of it working:

Then I spotted that it says specifically horizontal in the issue summary so attempted with that too:

Note that if you have a mix of horizontal and vertical tabs, that will still not work but that I created as a separate issue:

🐛 Horizontal tabs are not horizontal with Field Group 4.x due to regression Active