Hi Helge,
I don't run out of ideas, obviously, as I observed yesterday that a connectivity loss leads to an automation abort (automation_engine.py line 113). As I use my cell hotspot to connect to the web at the moment, because the fiber optics are still not hooked up to my house, when I leave so does the hotspot and connectivity is lost. So my blinds stayed down and the night cover didn't come up, obviously.
Therefore I suggest a graceful way of handling connectivity loss by moving blinds lowered by the automation back up if not in manual mode. In the case of night covers only the time/sun information is required so these might still be executed.
I know it's a rather unusual setting in my case but anyway ...
LG Christian