This has happened to me recently since I switched from dual wield to two handed. When I knock monsters back with Wrecking Blow it's quite common for them to go thru doors into areas I can't go like prison cells, etc. And while I can't even see or hit them they can fire arrows and spells at me. Has anyone else seen this and is there any way to deal with it other than moving away and forcing them to come back into visible areas?