Problem
When MB Tabs is active and you validate a metabox without tabs, validation causes a JavaScript error:
tabs.js?ver=1.1.7:12 Uncaught TypeError: Cannot read property 'panel' of undefined
at showTab (tabs.js?ver=1.1.7:12)
at HTMLFormElement.<anonymous> (tabs.js?ver=1.1.7:41)
at HTMLDocument.dispatch (jquery.min.js?ver=3.5.1:2)
at HTMLDocument.v.handle (jquery.min.js?ver=3.5.1:2)
at Object.trigger (jquery.min.js?ver=3.5.1:2)
at HTMLFormElement.<anonymous> (jquery.min.js?ver=3.5.1:2)
at Function.each (jquery.min.js?ver=3.5.1:2)
at s.fn.init.each (jquery.min.js?ver=3.5.1:2)
at s.fn.init.trigger (jquery.min.js?ver=3.5.1:2)
at validation.min.js?ver=5.3.9:18
Reproduction path
- Activate MB Tabs
- Create a metabox without tabs with a required field
- Open the post type with the metabo, leave the required field empty and save the post
.
