
The modal window should open.
Modal window does not open. Errors are reported in the console
Unchecked runtime.lastError: The message port closed before a response was received.
VM789:1 Uncaught SyntaxError: Unexpected token &
at HTMLDivElement.<anonymous> (bootstrap-init.min.js?b6432954b58a2d1215a2ab1cfd487988:1)
at HTMLDivElement.dispatch (jquery.min.js?3.3.1:2)
at HTMLDivElement.y.handle (jquery.min.js?3.3.1:2)
at Object.trigger (jquery.min.js?3.3.1:2)
at HTMLDivElement.<anonymous> (jquery.min.js?3.3.1:2)
at Function.each (jquery.min.js?3.3.1:2)
at w.fn.init.each (jquery.min.js?3.3.1:2)
at w.fn.init.trigger (jquery.min.js?3.3.1:2)
at r.e.show (modal.js:117)
at HTMLDivElement.<anonymous> (modal.js:517)
Setting | Value
-- | --
PHP Built On | Linux m36s20-6-25db.ispgateway.de 3.18.117-pvops-xen-x64 #1 SMP Tue Aug 7 13:41:39 CEST 2018 x86_64
Database Type | mysql
Database Version | 5.6.19-67.0-log
Database Collation | utf8_general_ci
Database Connection Collation | utf8_general_ci
PHP Version | 7.2.3
Web Server | Apache/2.4.35
WebServer to PHP Interface | fpm-fcgi
Joomla! Version | Joomla! 4.0.0-alpha7-dev Development [ Amani ] 27-December-2018 17:58 GMT
User Agent | Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/72.0.3626.109 Safari/537.36
issue confirmed
And also,
Save & Close and Save button not working
Only Close button is working
@amitranjan2
Save @ Close button not working in modal window when you can open a modal window (See: https://github.com/joomla/joomla-cms/issues/23260) . In this case the modal window cannot be opened at all.

I am getting nothing like that
can I work on this issue?
I think so. And also on that: https://github.com/joomla/joomla-cms/issues/23260
You don't need a permission to do it. We are happy to help you.
Set to "closed" on behalf of @Quy by The JTracker Application at issues.joomla.org/joomla-cms/23910
Please test PR #24349
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