Child processes does not close

Whenever Brave is opened up with one tab open it spawns (for me) 11 child processes and uses about 265-280mb of ram, and whenever you open a new tab/window the child processes will spawn and get killed accordingly.
Ok so whats the problem?
When you open a new private window with tor and then close it, the child processes spawned by it doesn’t close and you’ll end up with excessive memory usage since they don’t close accordingly.

Hopefully this isn’t intended, and if it is my bad!