I think you’re being a little harsh on Litchi.
Let’s see what the logs say is the cause before attributing blame.
Anything that can achieve what’s in these videos can’t be that bad.
Accepted. Those videos are in mission mode.
I always set the end of mission setting to return to waypoint 1 (above take-off) … even if I set a final waypoint that’s close enough to act in the same manner … from where I can take control.
I had something go strange with a mission that was all my mistake (even tho I never worked out exactly what). I cancelled the mission and used RTH and it worked fine.
Agreed, that’s not a proof of what happens when connection is lost … I just had a huge hotel in the way … but I had a good video down-link at all times.
(I would have flown it back had I not already faffed about long enough and only made the start of the wedding service by 30 secs. 
)
PS: As soon as I get time, and for my own peace of mind, I shall fly using Litchi in FPV mode and switch off the RC … and report back what happens. I’ll try all three settings … RTH, Hover, Land.