Only static/stationary lighting, and static meshes will show up in reflections. So if the wall is moveable or one of your lights is moveable it will not be visible. Also try moving the reflection around, it may be getting occluded by the chair.
Only static/stationary lighting, and static meshes will show up in reflections. So if the wall is moveable or one of your lights is moveable it will not be visible. Also try moving the reflection around, it may be getting occluded by the chair.