Browser stuck loading

Windows 7 x64 sp1
Firefox 72

Before or after the backup sometimes I want to see how is the backup, so I double click in the icon tray to open the browser, firefox opens but it just loading without showing the gui from http://localhost:8200/ngax/index.html and this keeps forever, I can confirm with resmon.exe that “Duplicati.GUI.TrayIcon.exe” it’s listening in the port 8200

I have to close the app, open again and repeat until the gui loads and even after it shows the page the loading icon is still moving and in the title says:" - Duplicati" instead of “COMPUTERNAME - Duplicati”, if I close the tab and open again it loads fine

Anyone with this issue?
I’m getting frustated with this

Welcome to the forum!

This can sometimes happen due to a caching issue. With Firefox try holding Shift and pressing the reload button the next time you see this happen.