Fix subscription tab hiding not working on launch (#5925)

Author: absidue

src/renderer/views/Subscriptions/Subscriptions.js

@@ -96,7 +96,11 @@ export default defineComponent({
     } else {
       // Restore currentTab
       const lastCurrentTabId = sessionStorage.getItem('Subscriptions/currentTab')
-      if (lastCurrentTabId !== null) { this.changeTab(lastCurrentTabId) }
+      if (lastCurrentTabId !== null) {
+        this.changeTab(lastCurrentTabId)
+      } else if (!this.visibleTabs.includes(this.currentTab)) {
+        this.currentTab = this.visibleTabs[0]
+      }
     }
   },
   methods: {