diff --git a/app/assets/javascripts/editor/editor.js.erb b/app/assets/javascripts/editor/editor.js.erb
index ceb24a6a..5385319b 100644
--- a/app/assets/javascripts/editor/editor.js.erb
+++ b/app/assets/javascripts/editor/editor.js.erb
@@ -16,10 +16,6 @@ var CodeOceanEditor = {
   REQUEST_FOR_COMMENTS_DELAY: 3 * 60 * 1000,
   REQUEST_TOOLTIP_TIME: 5000,
 
-  NONE: 0,
-  WEBSOCKET: 1,
-  SERVER_SEND_EVENT: 2,
-
   editors: [],
   editor_for_file: new Map(),
   regex_for_language: new Map(),
@@ -30,7 +26,6 @@ var CodeOceanEditor = {
   running: false,
   qa_api: undefined,
   output_mode_is_streaming: true,
-  runmode: this.NONE,
 
   numMessages: 0,
   prompt: '#prompt',
@@ -102,7 +97,6 @@ var CodeOceanEditor = {
 
   showOutput: function(event) {
     event.preventDefault();
-    this.showTab(0);
     this.showOutputBar();
     $('#output').scrollTo($(this).attr('href'));
   },
@@ -147,8 +141,6 @@ var CodeOceanEditor = {
   handleKeyPress: function (event) {
     if (event.which === this.ALT_1_KEY_CODE) {
       this.showWorkspaceTab(event);
-    } else if (event.which === this.ALT_3_KEY_CODE) {
-      this.showTab(1);
     } else if (event.which === this.ALT_R_KEY_CODE) {
       $('#run').trigger('click');
     } else if (event.which === this.ALT_S_KEY_CODE) {
@@ -498,7 +490,6 @@ var CodeOceanEditor = {
     this.clearOutput();
     $('#hint').fadeOut();
     $('#flowrHint').fadeOut();
-    this.showTab(0);
     this.showOutputBar();
   },
 
@@ -517,21 +508,6 @@ var CodeOceanEditor = {
     };
   },
 
-  showRequestedTab: function() {
-    if(this.REMEMBER_TAB){
-      var regexp = /tab=(\d+)/;
-      if (regexp.test(window.location.search)) {
-        var index = regexp.exec(window.location.search)[1] - 1;
-      } else {
-        var index = this.localStorage.tab;
-      }
-    } else {
-      // else start with first tab.
-      var index = 0;
-    }
-    this.showTab(index);
-  },
-
   showSpinner: function(initiator) {
     $(initiator).find('i.fa').hide();
     $(initiator).find('i.fa-spin').show();
@@ -557,10 +533,6 @@ var CodeOceanEditor = {
     });
   },
 
-  showTab: function(index) {
-    $('a[data-toggle="tab"]').eq(index || 0).tab('show');
-  },
-
   showTimeoutMessage: function() {
     $.flash.info({
       icon: ['fa', 'fa-clock-o'],
@@ -574,13 +546,6 @@ var CodeOceanEditor = {
     });
   },
 
-  showWorkspaceTab: function(event) {
-    if(event){
-      event.preventDefault();
-    }
-    this.showTab(0);
-  },
-
   showFileDialog: function(event) {
     event.preventDefault();
     this.createSubmission('#create-file', null, function(response) {
@@ -637,7 +602,6 @@ var CodeOceanEditor = {
     this.initPrompt();
     this.renderScore();
     this.showFirstFile();
-    this.showRequestedTab();
 
     $(window).on("beforeunload", function() {
       if(this.autosaveTimer != null){
diff --git a/app/assets/javascripts/editor/evaluation.js.erb b/app/assets/javascripts/editor/evaluation.js.erb
index 2011de6b..fdc3d552 100644
--- a/app/assets/javascripts/editor/evaluation.js.erb
+++ b/app/assets/javascripts/editor/evaluation.js.erb
@@ -8,7 +8,6 @@ CodeOceanEditorEvaluation = {
     }, 0).toFixed(2);
     $('#score').data('score', score);
     this.renderScore();
-    this.showTab(1);
   },
 
   handleTestResponse: function (result) {
@@ -18,7 +17,6 @@ CodeOceanEditorEvaluation = {
       this.qa_api.executeCommand('syncOutput', [result]);
     }
     this.showStatus(result);
-    this.showTab(0);
     this.showOutputBar();
   },
 
@@ -102,7 +100,6 @@ CodeOceanEditorEvaluation = {
 
   scoreCode: function (event) {
     event.preventDefault();
-    this.runmode = this.SERVER_SEND_EVENT;
     this.createSubmission('#assess', null, function (response) {
       this.showSpinner($('#assess'));
       $('#score_div').removeClass('hidden');
@@ -114,12 +111,7 @@ CodeOceanEditorEvaluation = {
   stopCode: function (event) {
     event.preventDefault();
     if (this.isActiveFileStoppable()) {
-      if (this.runmode == this.WEBSOCKET) {
-        this.killWebsocketAndContainer();
-      } else if (this.runmode == this.SERVER_SEND_EVENT) {
-        this.stopCodeServerSendEvent(event);
-      }
-      this.runmode = this.NONE;
+      this.killWebsocketAndContainer();
     }
   },
 
diff --git a/app/assets/javascripts/editor/submissions.js.erb b/app/assets/javascripts/editor/submissions.js.erb
index 213a9540..7ed7ad45 100644
--- a/app/assets/javascripts/editor/submissions.js.erb
+++ b/app/assets/javascripts/editor/submissions.js.erb
@@ -118,7 +118,6 @@ CodeOceanEditorSubmissions = {
               stderr: message
             }, true, 0);
             this.sendError(message, response.id);
-            this.showTab(0);
             this.showOutputBar();
           };
         }
@@ -130,7 +129,6 @@ CodeOceanEditorSubmissions = {
   runCode: function(event) {
       event.preventDefault();
       if ($('#run').is(':visible')) {
-        this.runmode = this.WEBSOCKET;
         this.createSubmission('#run', null, function(response) {
           //Run part starts here
           $('#stop').data('url', response.stop_url);