Adding non-latin tags to joomla articles

[mijalis]

Steps to reproduce the issue

Add/edit article and add a tag using a non-latin tags (eg greek)
For example: Αριανα (Greek for "Ariana")

Expected result

When "Αριανα" is typed, the message "Looking for 'Αριανα'" should be shown and the user should be able to save tag by pressing "Enter".
For example when adding "Ariana":

Actual result

Cannot save tag, the first available tag from the list is added to the article.
When the string "Αριανα" is typed, the message "Looking for 'Αριανα'" is not shown, therefore saving the tag is not possible.

System information (as much as possible)

PHP Built On FreeBSD 1.1.1.1 10.3-STABLE FreeBSD 10.3-STABLE #0: Sat Dec 17 14:30:45 EET 2016 root@1.1.1.1:/usr/obj/usr/src/sys/GENERIC amd64
Database Version 5.6.36
Database Collation latin1_swedish_ci
Database Connection Collation utf8mb4_general_ci
PHP Version 5.6.30
Web Server nginx/1.12.0
WebServer to PHP Interface fpm-fcgi
Joomla! Version Joomla! 3.7.2 Stable [ Amani ] 22-May-2017 09:46 GMT
Joomla! Platform Version Joomla Platform 13.1.0 Stable [ Curiosity ] 24-Apr-2013 00:00 GMT
User Agent Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.110 Safari/537.36

Additional comments

[dgrammatiko]

I can't replicate this. Can you open your browser's console and see if there are any errors logged there? If so can you copy/paste them here?

[mijalis]

No errors appearing..

[mijalis]

I just tried it in a different environment and it is working fine..the configuration though is different (Apache instead of Nginx.
I suspect that it could be a php conf. setting maybe?

[mijalis]

I am getting somewhere..
Plugin Cachecontrol is causing it..
When disabled is working fine.

[brianteeman]

in that case i am closing it here as a non core issue - I suggest that you contact the developer of that extension directly.

[mijalis]

I am re-opening this because the problem still exists.
I incorrectly reported that the plugin Cachecontrol was causing it.

I managed to correctly reproduce the problem, and it happens only if at least one tag exists in the database.

Steps to reproduce the issue

Remove all tags from administrator/index.php?option=com_tags
Add/edit article and add any tag, eg: "Ariana"
Save and close Article
Edit same article and add any tag using a non-latin tags (eg greek)
For example: Αριανα (Greek for "Ariana")

Actual result

Cannot save tag, the first available tag from the list is added to the article.
When the string "Αριανα" is typed, the message "Looking for 'Αριανα'" is not shown, therefore saving the tag is not possible.

[joomla-cms-bot]

Set to "open" on behalf of @franz-wohlkoenig by The JTracker Application at issues.joomla.org/joomla-cms/16225

[ghost]

reopened as @mijalis wrote.

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_{This comment was created with the J!Tracker Application at issues.joomla.org/tracker/joomla-cms/16225.}

[joomla-cms-bot]

Set to "closed" on behalf of @franz-wohlkoenig by The JTracker Application at issues.joomla.org/joomla-cms/16225

[ghost]

closed in favor of Issue #16235

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_{This comment was created with the J!Tracker Application at issues.joomla.org/tracker/joomla-cms/16225.}