Fix T58551: Dragged in images do not display orange highlight border when selected

source/blender/draw/modes/object_mode.c

@@ -895,7 +895,7 @@ static void DRW_shgroup_empty_image(
 		DRW_shgroup_uniform_int_copy(grp, "depthMode", ob->empty_image_depth);
 		DRW_shgroup_uniform_float(grp, "size", &ob->empty_drawsize, 1);
 		DRW_shgroup_uniform_vec2(grp, "offset", ob->ima_ofs, 1);
-		DRW_shgroup_uniform_vec4(grp, "color", color, 1);
+		DRW_shgroup_uniform_vec3(grp, "color", color, 1);
 		DRW_shgroup_call_add(grp, DRW_cache_image_plane_wire_get(), ob->obmat);
 	}
 }

source/blender/draw/modes/shaders/object_empty_image_vert.glsl

@@ -24,6 +24,7 @@ void main()
 		(pos + offset) * (size * vec2(aspectX, aspectY)),
 		0.0, 1.0);
 #ifdef USE_WIRE
+	gl_Position.z -= 1e-5;
 	finalColor = vec4(color, 1.0);
 #else
 	texCoord_interp = texCoord;