diff --git a/geom-exp.cpp b/geom-exp.cpp
index ff58355b..350a96ba 100644
--- a/geom-exp.cpp
+++ b/geom-exp.cpp
@@ -1004,6 +1004,7 @@ EX void showEuclideanMenu() {
     dialog::addSelItem(XLAT("Z-level height factor"), fts(vid.plevel_factor), 'Z');
     dialog::add_action([] {
       dialog::editNumber(vid.plevel_factor, 0, 2, 0.1, 0.7, XLAT("Z-level height factor"), "");
+      dialog::reaction = ray::reset_raycaster;
       });
     }
   else if(hybri) {
diff --git a/geometry.cpp b/geometry.cpp
index 36b4da0f..ade445ff 100644
--- a/geometry.cpp
+++ b/geometry.cpp
@@ -816,11 +816,6 @@ void geometry_information::prepare_basics() {
     plevel = M_PI * single_step / psl_steps;
     }
   
-  if(hybri) {
-    /* we do not want too short creatures, better make the scale factor smaller */
-    scalefactor = min(scalefactor, cgi.plevel * 1.8 / vid.height_width);
-    }
-  
   set_sibling_limit();
   
   prepare_compute3();
diff --git a/intra.cpp b/intra.cpp
index 5da731b8..6424454c 100644
--- a/intra.cpp
+++ b/intra.cpp
@@ -702,6 +702,8 @@ EX void world_list() {
         addMessage(XLAT("Map loaded from %1", levelfile));
         intra::become();
         intra::start();
+        mapeditor::map_version++;
+        ray::reset_raycaster();
         return true;
         }
       else {
@@ -814,6 +816,8 @@ EX void show_portals() {
     dialog::addSelItem(XLAT("height-to-width ratio"), fts(r), 'r');
     dialog::add_action([] {
       be_ratio_edge(mouseover2, point_direction);
+      mapeditor::map_version++;
+      ray::reset_raycaster();
       });
     }
   else dialog::addBreak(100);
@@ -863,7 +867,7 @@ EX ld get_edge_length(cell *c, int i) {
 
 EX ld get_ratio_edge(cell *c, int i) {
   ld len = get_edge_length(c, i);
-  return PIU( vid.plevel_factor * cgi.scalefactor / len );
+  return vid.plevel_factor * cgi.scalefactor / len;
   }
 
 EX void be_ratio_edge(cell *c, int i, ld v IS(1)) {