Before I give access, I have to unlock my wordpress – I have secured it for security.
I noticed that the problem is with “Webcraftic Clearfy – WordPress optimization plugin”.
When I turn it off, the problem is gone. When I turn it on, the problem returns again – not only on Tabs but also on e.g. 404 Page …
Please take a look at the error – this is what chrome displays:
script.js?ver=3.1.3:1931 Uncaught ReferenceError: tinyMCE is not defined
at i.ready (script.js?ver=3.1.3:1931:3)
at customize-controls.min.js?ver=dbdbcd28f58f2aad2e33239af6c2d938:2:40456
at c (jquery.min.js?ver=3.6.0:2:28327)
at Object.add [as done] (jquery.min.js?ver=3.6.0:2:28605)
at i.initialize (customize-controls.min.js?ver=dbdbcd28f58f2aad2e33239af6c2d938:2:40398)
at i.initialize (script.js?ver=3.1.3:52:37)
at o.Class (customize-base.min.js?ver=dbdbcd28f58f2aad2e33239af6c2d938:2:571)
at i [as constructor] (customize-base.min.js?ver=dbdbcd28f58f2aad2e33239af6c2d938:2:180)
at i [as constructor] (customize-base.min.js?ver=dbdbcd28f58f2aad2e33239af6c2d938:2:180)
at new i (customize-base.min.js?ver=dbdbcd28f58f2aad2e33239af6c2d938:2:180)