Cpanel Code Eritor :: Error Editing utf-8 files

Hello,
Recently I lend that cpanel file manager Can not show utf-8 files correctly,
when I right click on a file in file manager and click Code Editor, The editor page is start loading but it load only English texts till utf-8 starting..
I mean It doesn't show where utf-8 texts started


Clicking on Reopen and then use code editor buttons solve the problem temporary


I even forced cpanel to update and linux centos and apache and php and ... is updated too.