Windows don't stay open when navigating

[WDendas]

Hi,

We are using Arrowchat for a few years now.
Since the last update (v2.2) we have some caching-issues.
Our website runs on PHP 7.1 and we have OpCache enabled.
When we open a chat window and go to a different page, the window is closed again.
The same issue appears with the chatroom windows.

It seems that the browser forgets about the window when you navigate.
Is there a known problem with OpCache? In previous versions we never experienced anything like this.
We use OpCache for a while, but these problems started since v2.2.

Does anyone experience the same issues?

Thanks in advance!
Wouter Dendas

[WDendas]

After reinstalling Arrowchat, it works fine.
I guess there is some major change in the v2.2 update?
When updating, I only replace the files that are changed (according to the topic).
Is it possible that this list is not complete?

arrowchat/bootstrap.php
arrowchat/admin/index.php
arrowchat/admin/layout/pages_system.php
arrowchat/includes/classes/class_arrowpush.php
arrowchat/includes/js/arrowchat_core.dev.js
arrowchat/includes/js/arrowchat_core.js
arrowchat/includes/js/arrowchat_libraries.js
arrowchat/includes/js/arrowchat_mobile.js
arrowchat/includes/json/receive/receive_init.php
arrowchat/includes/json/send/send_message.php
arrowchat/includes/json/send/send_message_chatroom.php
arrowchat/includes/json/send/send_settings.php
arrowchat/includes/json/send/send_typing.php
arrowchat/public/mobile/includes/js/mobile_core.dev.js
arrowchat/public/mobile/includes/js/mobile_core.js
arrowchat/public/mobile/includes/js/mobile_libraries.js
arrowchat/public/popout/js/popout_core.dev.js
arrowchat/public/popout/js/popout_core.js
arrowchat/public/popout/js/popout_libraries.js