BURCIN ARIKAN

same same

This key is not available in English (US) or any other language.
I have attached a screenshot of similar keys.

In some cases the translation doesn't work too:
 
We also couldn't translate short month name eg. OCT, NOV

In some event views the global date format doesn't work:


In some cases the translation doesn't work too:

Correct, long overdue but updated at last.    (Was also waiting for skin updates Sherri, never came)
So before update: removed skins / removed plugin's and other customize settings. Look ok, default forum no problem.
Performed upgrade, looks ok. 
However calendar seems nog to work:
SELECT calendar_events.*, ( 3959 * acos( cos( radians(52,5) ) * cos( radians( event_latitude ) ) * cos( radians( event_longitude ) - radians( 5,75 ) ) + sin( radians( 52,5 ) ) * sin( radians( event_latitude) ) ) ) AS distance, author.*, core_tags_cache.tag_cache_text FROM `ibf_calendar_events` AS `calendar_events`  LEFT JOIN `ibf_core_tags_cache` AS `core_tags_cache` ON tag_cache_key=MD5(CONCAT('calendar;calendar;',calendar_events.event_id))  LEFT JOIN `ibf_core_members` AS `author` ON author.member_id = calendar_events.event_member_id WHERE ( event_online = 0 ) AND ( event_location IS NOT NULL ) AND event_recurring IS NULL AND ( etc etc
 
Any idea? I will upgrade php but have to do some upgrades also to other software running on this host. 
For now disabled calendar and forum is running without problems.  Loaded new skins from ipsfocus also no problems. 
Any ideas, or just wait until php 8 upgrade?

https://www.w3resource.com/mysql/mathematical-functions/mysql-radians-function.php
The radians function accepts one parameter.  Should those commas be a decimal?
 

This sounds like a bug.