Format autocomplete suggestions vertically

res/css/views/rooms/_Autocomplete.scss

@@ -60,15 +60,14 @@
 .mx_Autocomplete_Completion_container_pill {
     margin: 12px;
     display: flex;
-    flex-flow: wrap;
+    flex-direction: column;
 }
 
 .mx_Autocomplete_Completion_container_truncate {
     .mx_Autocomplete_Completion_title,
     .mx_Autocomplete_Completion_subtitle,
     .mx_Autocomplete_Completion_description {
         /* Ellipsis for long names/subtitles/descriptions */
-        max-width: 150px;
         white-space: nowrap;
         overflow: hidden;
         text-overflow: ellipsis;