i noticed a weird behaviour after creating an usual link and klicking on it. it's just a simple link from one controller-page to the other but sometimes (not each time!) when i klick the link the user gets logged out and therefore the page can not be displayed (Unauthorized You don't have access to this option. Contact an administrator). i have no idea what causes this random error as everything seems to be made correct programmatically.
so, before the link is clicked the user is always logged in with the correct role. after clicking on this link, sometimes he gets logged out and changes from authenticated role to role "guest" and therefore the page can not be displayed.
the link in the volt-page looks like this: <a href="https://localhost:8080/resort/snowropeway/details/{{plant.UID}}">{{plant.PlantName}}</a>