Using v7.90.009 ALPHA, it looks like Libreelec settings add-on is not writing the "wait for network before starting kodi" setting
If I remember correctly, (not sure) it used to write startup.sh and put a delay=X in there, it doesnt seem to be doing this and on start-up there is no delay inserted.
In my case (intel nuc) is means no network until after my movies/tv/music scan, hence nothing new its found.
Thanks for looking into this.