Hello, I'm not sure if this is the right place to ask this type of question, but I've been getting a weird problem in ArcMap 10.5 that I can't find a lot of information about. When I rotate my data frame, after various amounts of panning around, the data frame resets to the default rotation and the basemap completely disappears. It's still in the table of contents and the checkbox can still be checked but the only fix I've found is to remove the basemap and just move it back in from the catalog. Is there something I'm doing wrong? I tried to create a completely new .mxd but the same problem happens. Any help would be greatly appreciated, thank you!
I'm not sure that the basemap is actually a "basemap". I think it's just a raster that the OP is using as the background/base layer in the map.
Ken, there used to be an issue when a raster is being both reprojected and rotated via a map rotation. Is the raster being projected on-the-fly? If so, can you try either not reprojecting and see if the same problem occurs or using the Project Raster tool to create a copy of the raster in the map's coordinate system.
Melita