Hi Kneebiter,
From some quick googling it looks like its a log file which is just logging actions which are happening on the system. I’ve confirmed that the Launcher isn’t actively logging to that system, instead I suspect that the OS actions themselves are configured to do so.
When we launch an app we look at running processes to allow us to monitor when the application has closed. This stops us updating the application automatically when the app is open and also allows us to control various aspects of the UI.
To look for that running process we need to enumerate all the running processes on the machine looking for the one we launched.
I’ll be sure to follow up with the team to ensure we aren’t adversely effecting performance in the process on mac.