Setup: DiscMount DM6 with SkyCommander 4, SkyFi USB Wireless interface to iPad 4 running SkiSafari 6. (One night was spent at McDonald Observatory on the 36" telescope without the connection to the SkiFi....just the iPad to manage the list. The behavior was the same.)
I recently attended the Texas Star Party, and having recently upgraded to SS6 Pro on my iPad4, I used SkySafari6 Pro for the first time to conduct my observing sessions out in the field. I transferred a number of existing lists from SS5 Pro, and created two new lists as well. The issue encountered was not specific to any one list....
Upon completing an observation and attempting to log it, the Edit/Create Observation action intermittently hung up. (There are a couple places where this process can be initiated...i.e. through the "Selection" pick or via the Observing list itself, it didn't matter which method was used). Upon triggering the action to log my observation sometimes SS6 Pro was delayed in bringing up the screen where one enters the Time, Location, Observing Conditions and Comments, and other times the "iOS wheel" simply spun and hung, and never brought up the screen where the observation is logged. Killing and re-starting the SS6 Pro application would sometimes result in the object being logged as observed, other times I had to re-try the Edit/Create Observation process.
I killed and restarted SkySafari 6 from several times over several days. The behavior continued throughout the course of a week at TSP.