Drive shared to KODI opens every hour in Windows 10

I shared a drive on my Windows 10 PC to access from Kodi running under LibreELEC on a Raspberry Pi and now every 60 minutes (happened at 5:20 and 6:20, maybe it at 5:50 too) a Windows explorer window pops up on the screen (on the PC) open to the contents of the drive I shared.

I also shared another drive on the PC but that one never opens a window like this.

Is that something that KODI is doing? Is there a way to stop it?

Or, is this some Windows 10 bug with shared folders?