Merge branch 'master' into refactor-hide-pane

src/ui/layout/pane.vue

@@ -78,11 +78,15 @@ export default {
     async mounted() {
         await this.$nextTick();
         // Hide tree and/or inspector pane if specified in URL
-        this.handleHideUrl();
+        if (this.collapsable) {
-        this.openmct.router.on('change:params', this.handleHideUrl);
+            this.handleHideUrl();
+            this.openmct.router.on('change:params', this.handleHideUrl);
+        }
     },
     beforeDestroy() {
-        this.openmct.router.off('change:params', this.handleHideUrl);
+        if (this.collapsable) {
+            this.openmct.router.off('change:params', this.handleHideUrl);
+        }
     },
     methods: {
         toggleCollapse: function (e) {