Watched it for about 3hrs.. some observations I made during this time:
Darkmist Digsite in Feralas - Stopped flying 175 yards from site seems to be confused because it has to climb up a cliff peak to get into the digsite. Moved manually to this dig site and started bot, it did first dig on ground then flew up onto roof, got stuck had to jump off roof manually.
Slitherblade Shore Digsite Desolace - Got stuck on roof after flying between digs, had already landed at site without issue.
Stopped flying on route from Fields of Blood fossil bank in southern barrens to Sanurty of Malorne Digsite, just stopped mid air 643 yards away from digsite, no errors. <Hotspot X="3860.485" Y="-1768.218" Z="359.0724" /> had to fly up the mountain manually.
Scored Plain Digsite, stuck on roof at <Hotspot X="4614.747" Y="-2972.238" Z="1079.357" />
Stopped flying on route to Consellas digsite in Felwood <Hotspot X="5052.722" Y="-1288.318" Z="1404.807" /> mountain to climb again.
Stopped flying on route to Lower Lakkari Tar Pits in Un'Goro Crater <Hotspot X="-6063.442" Y="-1989.261" Z="123.2942" /> doing jerky 360 spin again.
Lower Lakkari Tar Pit, lots of issues here, bot went out of dig zone several times and stopped mid air when flying between digs at this site.
Stopped flying on route to Ironwood digsite @ <Hotspot X="5315.112" Y="-1421.417" Z="1411.846" /> looks like another issue with mountain to climb.