diff --git a/CHANGELOG.md b/CHANGELOG.md
index 09c4204..ab659b5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,8 @@
+## 1.5
+
+- user height and positional controllers height fix
+- photo sphere menu bug fix: clicking on thumbnail of current photo sphere made scene black
+
 ## 1.4
 
 - Controller responsiveness improved on navigation and info hotspots
diff --git a/js/isvr-photosphere-menu-thumb-component.js b/js/isvr-photosphere-menu-thumb-component.js
index b53837d..8028a8a 100644
--- a/js/isvr-photosphere-menu-thumb-component.js
+++ b/js/isvr-photosphere-menu-thumb-component.js
@@ -23,47 +23,53 @@ AFRAME.registerComponent('isvr-photosphere-menu-thumb', {
                 hotspots[i].setAttribute('visible', false);
             }
 
-            /* reset camera rotation in order to let people see the photo sphere title, if set */
-            var camera = document.querySelector('#camera');
-            camera.setAttribute('rotation', { x:0, y:0, z:0 });
-
             var sphere = document.querySelector('#photosphere');
-            sphere.emit('photosphere-fade-out');
-            sphere.setAttribute('material', 'src', '#img-photosphere-' + image_id);
-            sphere.setAttribute('data-content-id', content_id);
-
-            var materialtextureloaded_listener = function() {
-
-                document.querySelector('#photosphere-menu').setAttribute('visible', false);
-
-                self.el.sceneEl.systems['isvr-scene-helper'].hideCursor();
-
-                /* set visible to true on hotspot wrapper, opacity is still 0 so they are invisible */
-                var hotspot_wrapper = document.querySelectorAll('.hotspot-wrapper-content-id-' + content_id);
-                for (var i = 0; i < hotspot_wrapper.length; i++) {
-                    hotspot_wrapper[i].setAttribute('visible', true);
-                }
-                /* animation */
-                var hotspots = document.querySelectorAll('.hotspot-content-id-' + content_id);
-                for (var i = 0; i < hotspots.length; i++) {
-                    hotspots[i].setAttribute('visible', true);
-                    hotspots[i].emit('hotspot-intro-' + content_id);
-                }
-
-                var title = document.querySelector('#photosphere-title-content-id-' + content_id);
-                if (title != null) {
-                    title.setAttribute('position', { x: 0, y:1.6, z:-2 });
-                    title.setAttribute('visible', true);
-                    setTimeout(function() {
-                        title.setAttribute('visible', false);
-                        /* workaround because of interference with menu */
-                        title.setAttribute('position', { x: 0, y:1.6, z:-10 });
-                    }, 10000);
-                }
-                sphere.emit('photosphere-fade-in');
-                sphere.removeEventListener('materialtextureloaded', materialtextureloaded_listener);
-            };
-            sphere.addEventListener('materialtextureloaded', materialtextureloaded_listener);
+
+            /* do not allow selecting the current photo sphere again */
+            if (sphere.getAttribute('material').src.id != 'img-photosphere-' + image_id) {
+
+                sphere.emit('photosphere-fade-out');
+                sphere.setAttribute('material', 'src', '#img-photosphere-' + image_id);
+                sphere.setAttribute('data-content-id', content_id);
+
+                var materialtextureloaded_listener = function() {
+
+                    /* reset camera rotation in order to let people see the photo sphere title, if set */
+                    var camera = document.querySelector('#camera');
+                    camera.setAttribute('rotation', { x:0, y:0, z:0 });
+
+                    document.querySelector('#photosphere-menu').setAttribute('visible', false);
+
+                    self.el.sceneEl.systems['isvr-scene-helper'].hideCursor();
+
+                    /* set visible to true on hotspot wrapper, opacity is still 0 so they are invisible */
+                    var hotspot_wrapper = document.querySelectorAll('.hotspot-wrapper-content-id-' + content_id);
+                    for (var i = 0; i < hotspot_wrapper.length; i++) {
+                        hotspot_wrapper[i].setAttribute('visible', true);
+                    }
+                    /* animation */
+                    var hotspots = document.querySelectorAll('.hotspot-content-id-' + content_id);
+                    for (var i = 0; i < hotspots.length; i++) {
+                        hotspots[i].setAttribute('visible', true);
+                        hotspots[i].emit('hotspot-intro-' + content_id);
+                    }
+
+                    var title = document.querySelector('#photosphere-title-content-id-' + content_id);
+                    if (title != null) {
+                        title.setAttribute('position', { x: 0, y:1.6, z:-2 });
+                        title.setAttribute('visible', true);
+                        setTimeout(function() {
+                            title.setAttribute('visible', false);
+                            /* workaround because of interference with menu */
+                            title.setAttribute('position', { x: 0, y:1.6, z:-10 });
+                        }, 10000);
+                    }
+                    sphere.emit('photosphere-fade-in');
+                    sphere.removeEventListener('materialtextureloaded', materialtextureloaded_listener);
+                };
+                sphere.addEventListener('materialtextureloaded', materialtextureloaded_listener);
+
+            } /* if */
 
         } /* if */
 
diff --git a/js/isvr-scene.js b/js/isvr-scene.js
index e8b727e..01857d6 100644
--- a/js/isvr-scene.js
+++ b/js/isvr-scene.js
@@ -31,12 +31,15 @@ AFRAME.registerComponent('isvr-scene', {
 
         this.el.addEventListener('enter-vr', function() {
 
-            document.querySelector('#camera').setAttribute('camera', {
-                far: 10000,
-                fov: 80,
-                near: 0.1,
-                userHeight: 0 /* workaround needed for a-frame 0.7.0 */
-            });
+            /* workaround for non-positional tracking devices and a-frame 0.7.0 */
+            if (!AFRAME.utils.device.checkHasPositionalTracking()) {
+                document.querySelector('#camera').setAttribute('camera', {
+                    far: 10000,
+                    fov: 80,
+                    near: 0.1,
+                    userHeight: 0 
+                });
+            }
         });
 
         this.el.addEventListener('exit-vr', function() {