I found a problem in the "System - K2" plugin in version 2.10.3. When the "System - K2" plugin is enabled, if the site is multilingual, the language attributes ("lang" and "dir") that appear on the HTML tags, don't change and only the default language attributes will be displayed.
I checked the version 2.10.2 and everything is ok.
Please note that it does not matter if you use the K2 component or not; just install K2 to see this issue.
Please help and let me know what can I do?