The css to position legend markers was overriden by the vendor styles...

app/assets/stylesheets/maps.sass

@@ -24,9 +24,9 @@
 form.leaflet-control-layers-list label
   text-align: left
   .awesome-marker
-    height: auto
-    display: inline-block
-    position: relative
+    height: auto !important
+    display: inline-block !important
+    position: relative !important
 
 html.iframe #map
   width: 100%

public/assets/tinymce-554c95b1d24ee6cb338ed339233a70e15cf0074eacec99de99cc2a4136d60b4d.js

@@ -0,0 +1,21 @@
+(function() {
+  $(document).ready(function() {
+    return tinyMCE.init({
+      schema: 'html5',
+      menubar: false,
+      language: 'fr_FR',
+      selector: 'textarea.description',
+      content_css: '/assets/application-80267254eb940edca206faebfaaef536c10bb76d2332249a101cb05f18e6f833.css',
+      entity_encoding: 'raw',
+      add_unload_trigger: true,
+      browser_spellcheck: true,
+      toolbar: [' bold italic strikethrough | bullist numlist outdent indent | alignleft aligncenter alignright alignjustify | link image media insertdatetime charmap table | undo redo | searchreplace | code visualblocks preview fullscreen'],
+      plugins: 'lists, advlist, autolink, link, image, charmap, paste, print, preview, table, fullscreen, searchreplace, media, insertdatetime, visualblocks, visualchars, wordcount, contextmenu, code'
+    });
+  });
+
+  $(document).on('page:receive', function() {
+    return tinymce.remove();
+  });
+
+}).call(this);