I'm running the latest 8 beta on the latest iOS update, on my 10.5 iPad Pro, with about 100Gb of space free. Today I had about 6 "tabs" open, and went to run a Bible search in the KJV. Before I could even start typing the search in, it crashed the app. I reopened, immediate crash, never got beyond the load screen. I repeated this open/crash about 20 times, and haven't successfully loaded Logos since that crash.
