Can't add menu items.

[kevinkarel]

This is a follow-up to #26047.

Still the same problem here with 4.1. What to do?

​http://prntscr.com/5o699z

After clicking on the add to menu button it gives me this text:

​http://prntscr.com/5o69t1

[ocean90]

Hello kevinkarel,

what browser are using? Can you identify any ​JavaScript errors?

[kevinkarel]

Hi Ocean90,

As far as I can see no javascript errors in: IE 11, FireFox and chrome.

I could provide login details if needed.

[SergeyBiryukov]

Does the issue still happen with all plugins disabled and a default theme (Twenty Fifteen or Twenty Fourteen) activated?

[kevinkarel]

Hi Sergey,

Yes, I've disabled every plugin and enabled the twentyfifteen or fourteen theme.

Did not work either. :(

[kevinkarel]

Consider using 'dppx' units, as in CSS 'dpi' means dots-per-CSS-inch, not dots-per-physical-inch, so does not correspond to the actual 'dpi' of a screen. In media query expression: print, not all, (-webkit-min-device-pixel-ratio: 1.25), (min-resolution: 120dpi)
jquery-migrate.js?ver=1.2.1:21 nav-menu.php:25

JQMIGRATE: Logging is active

This is what the logging says. I think this has nothing to do with the problem I've got.

[kevinkarel]

Found the problem. It was a bug in Suhosin 0.9.37 and fixed it with 0.9.37.1. :)

[kevinkarel]

2014-12-12 - 0.9.37.1

• Changed version string to 0.9.37.1 (without -dev)
• Relaxed array index blacklist (removed '-') due to wordpress incompatibility