Von Zerick Casero

Thank you for fixing this issue Mr. Linus Cumselius

This problem still exist on the current 1.15.2 release.

I also have the same issue. The thing is, the launcher_log.txt only gets large if I play in offline mode/if I have no internet connection. When I play with internet connection on, it doesn't generate large launcher_log.txt file. I have uninstalled minecraft and reinstalled it, but the problem still there. I even unchecked the use the beta version of the launcher, and the problem still persist.

In short, it generates large launcher_log.txt file when you play without internet.