Fix monster hide status when moving ball & chain

diff --git a/src/hack.c b/src/hack.c
index 3566831a23464540f16da4e0fe11af6746379f88..c8c30d900e7a6c34753ae8d131677df253ac1a01 100644 (file)
--- a/src/hack.c
+++ b/src/hack.c
@@ -572,6 +572,7 @@ register xchar ox, oy;
 {
     /* optimize by leaving on the fobj chain? */
     remove_object(obj);
+    maybe_unhide_at(obj->ox, obj->oy);
     newsym(obj->ox, obj->oy);
     place_object(obj, ox, oy);
     newsym(ox, oy);