In response to Wulf ():
Well, there wasn't any issues in latest 15 months. Just checked, every single log file has last modification time at 23:58-23:59. And i didn't really changed anything lately. The only way i interfere with logs is opening them via WinSCP, and i never pressing "save" button. Can it be caused by upgrade of the Unity to 2019.1, or oxide logging implementation is completely written by yourself? I also had one issue, that -logfile didn't created any logs, until i switched from relative to absolute path, and then it worked fine.
Unity logging has been changed in 2019.1, as you can see from the patchnote:
And also some other changes, related to logging: https://unity3d.com/ru/unity/whats-new/2019.1.0