I am using Brave Browser
Version 1.0.0 Chromium: 78.0.3904.97 (Official Build) (64-bit) on Ubuntu 18.04. The browser has an option, open new private window with Tor . When looking into cache files today, I found a folder named "Tor Profile", and then subdirectories "Cache" and "Code Cache". They further have some subdirectories which finally have binary files, 'index' and 'the-real-index'.
I'm not sure about how the browsers function and whether this is shady or not, but why are these files even present on the system if they are related to what I browsed in that mode?
Note that no windows of that mode are active.