A compromised local user can leak your IP by using a script to start unsafe-browser hidden in the background and use X11 trickery to leak your real IP without privilege escalation. Most applications exploited on Tails would be capable of this.
deleting /etc/sudoers.d/zzz_unsafe-browser after booting will fix this issue until Tails fixes it themselves
Bug #15635
Feature #7072: Research potential for deanonymization by a compromised "amnesia" user
The Unsafe Browser allows to retrieve the public IP address by a compromised amnesia user with no user interaction
(Score: 2, Informative) by Burz on Monday June 18 2018, @03:37AM
A system that runs tor and apps (browser, etc) in separate VMs:
https://www.whonix.org [whonix.org]