VK Messages Fix is a free Chrome add-on developed by Dmitry Gusarov. It falls under the category of Browsers and specifically the subcategory of Add-ons & Tools. This add-on aims to restore manual management of the unread status for incoming messages on the VK social media platform.

With the update to the messaging system in March 2014, two changes were introduced that have received mixed feedback from users. Firstly, messages are automatically marked as read if the chat is open and active. Secondly, no sound is played for incoming messages if the chat is active, similar to the behavior in Skype.

VK Messages Fix offers an optional solution to revert these changes and regain control over the read status of messages. Users can manually manage the read status by using the mouse, starting text input, or by pressing Ctrl/Shift. Additionally, the add-on allows users to restore the sound notification for incoming messages.

Please note that this add-on is still under development, but it provides users with the ability to either disable all the new changes or modify the behavior of the new interface.