Small improvements in tabs opening (#5608)

Don't show in changelog

newIDE/app/src/MainFrame/EditorTabs/EditorTabsHandler.js

@@ -157,7 +157,11 @@ export const openEditorTab = (
 
   return {
     ...state,
-    editors: [...state.editors, editorTab],
+    editors:
+      // Make sure the home page is always the first tab.
+      key === 'start page'
+        ? [editorTab, ...state.editors]
+        : [...state.editors, editorTab],
     currentTab: dontFocusTab ? state.currentTab : state.editors.length,
   };
 };

newIDE/app/src/MainFrame/EditorTabs/UseEditorTabsStateSaving.js

@@ -112,10 +112,10 @@ const useEditorTabsStateSaving = ({
   );
 
   const openEditorTabsFromPersistedState = React.useCallback(
-    (project: gdProject) => {
+    (project: gdProject): number => {
       const projectId = project.getProjectUuid();
       const editorState = getEditorStateForProject(projectId);
-      if (!editorState) return;
+      if (!editorState) return 0;
       let shouldOpenSavedCurrentTab = true;
 
       const editorsOpeningOptions = editorState.editorTabs.editors
@@ -167,6 +167,7 @@ const useEditorTabsStateSaving = ({
           : 0
       );
       setEditorTabs(newEditorTabs);
+      return editorsOpeningOptions.length;
     },
     [
       getEditorOpeningOptions,

newIDE/app/src/MainFrame/index.js

@@ -1983,10 +1983,19 @@ const MainFrame = (props: Props) => {
                 currentProject &&
                 hasAPreviousSaveForEditorTabsState(currentProject)
               ) {
-                openEditorTabsFromPersistedState(currentProject);
+                const openedEditorsCount = openEditorTabsFromPersistedState(
-                setIsLoadingProject(false);
+                  currentProject
-                setLoaderModalProgress(null, null);
+                );
-                openProjectManager(false);
+                if (openedEditorsCount === 0) {
+                  openSceneOrProjectManager({
+                    currentProject: currentProject,
+                    editorTabs: state.editorTabs,
+                  });
+                } else {
+                  setIsLoadingProject(false);
+                  setLoaderModalProgress(null, null);
+                  openProjectManager(false);
+                }
               } else {
                 openSceneOrProjectManager({
                   currentProject: currentProject,
@@ -2064,10 +2073,19 @@ const MainFrame = (props: Props) => {
               currentProject &&
               hasAPreviousSaveForEditorTabsState(currentProject)
             ) {
-              openEditorTabsFromPersistedState(currentProject);
+              const openedEditorsCount = openEditorTabsFromPersistedState(
-              setIsLoadingProject(false);
+                currentProject
-              setLoaderModalProgress(null, null);
+              );
-              openProjectManager(false);
+              if (openedEditorsCount === 0) {
+                openSceneOrProjectManager({
+                  currentProject: currentProject,
+                  editorTabs: state.editorTabs,
+                });
+              } else {
+                setIsLoadingProject(false);
+                setLoaderModalProgress(null, null);
+                openProjectManager(false);
+              }
             } else {
               openSceneOrProjectManager({
                 currentProject: currentProject,