Device Used - Nexus 7 tablet running Android 6.0.1
When initially starting SkySafari 6 Pro, with Storage permission allowed, and Location permission denied, the app was in a near frozen state. Panning around took several seconds before it recognized the pan, and just jumped to a location instead of smoothly panning around.
When trying to access any of the bottom menu options, the app never pulled up the menu options. I was trying to get to the settings, to change my location, selecting it "from list", like I did previously in SkySafari 5 Pro, Skysafari 4 Pro, and Skysafari Pro.
This was not the case when the same permissions were selected as stated above with Skysafari 5 Pro, 4 Pro, or Pro. I was able on initial run to go to the settings, and select my location from list.
The walkaround I had to take in order to get Skysafari 6 Pro running, was use the app FakeGPS, select my location (Cuba) after turning on location in the Android OS, and allowing the location permission for Skysafari 6. Then on initial startup, it ran flawlessly, and I was able to then select items from the bottom menu, such as settings, get into that menu, and change my location to one selected from the list. I then quit Skysafari, force closed it, turned off location in Android OS, and denied the permission for Skysafari for Location. Next startup of Skysafari remembered the setting of the location selected from list, and ran flawlessly.