Steps to reproduce:
I have created a new VM and installed from scratch Zabbix server 5.0.2 today, latest version.
Then i created the database, user and other setup and worked fine, i was able to access the frontend and to navigate.

However, i have imported the mysql db with success, but now sometimes zabbix keeps kicking me out saying i am logged in as guest and when i log in back it shows me the old interface from zabbix 3.4

On the old server i did an upgrade for zabbix server from 3.4 to 5.0, then the same issue started so i deciced to install the frontend and mysql from scratch, the only thing i did was to import the mysql dump into the new server, that't it.

But now it shows me the old interface, if i log out and log in it show me the new interface and keep doing that.

What is the issue ?

I don't want to recreate everything from scratch because i created a lot of custom items and settings.