@dgt41 Could you have a look at this?

@ciar4n what was your editor? Can't reproduce

Using TinyMCE

can you clear your browser's cache and retry?

No change. Tried a fresh installation with the same result. Possibly just me but I'll leave this open for the time been and maybe someone else can replicate the issue.

What browser OS are you using?

Windows (Firefox & Chrome)

I can replicate it wit FF

might be related to the categories on the fly @pe7er can you check this?

im also not getting this issue with ff and chrome

I can confirm this with Chrome on OSX

I can confirm this with Chrome on OSX

Confirm on
Joomla! 3.7.0-staging
macOS Sierra, 10.12.3
Firefox 50.1.0
PHP 7.0.4
MySQLi 5.5.53-0

The same is true when creating menus

The issue appears to be related to the media field type. Removing these fields in article edit appears to resolve the issue.

@brianteeman Great to see you back!) You've certainly been missed.

@ciar4n can you describe the steps that you followed? Is the modal open? Which element is in focus?

@ciar4n Found it:
https://github.com/joomla/joomla-cms/blob/staging/media/media/js/mediafield.js#L119
change it to
return false;

Can you make a PR for this?

@dgt41 Admin -> Content -> Articles -> [AnyArticle]. Click the 'Alias' field. Hit Enter key.

Sure.

Has also to be changed in the compressed file. :)

#12563

We need to replace all the buttons in the modals...

Close?

Someone needs to take care all the modal buttons and change them to a, but yes close

Please don't close until we know who "Someone" is.

See #14483 (comment) for what remains

Closed as I have completed the remaining places identified by @infograf768 with #16156