FindSessions is returning results for games that have not been launched with CreateSession using the Oculus online subsystem.
For example, someone on my team will launch the main menu screen. They have not started a game, which calls CreateSession. If I launch into main menu and search for online games using FindSessions, their PC is returned in the list of results. I thought a rogue CreateSession might be called, so I set a breakpoint on it, but it is never hit. This is very weird behavior and only happens with Oculus. I do not encounter this issue when using Steam.