Update available extesions whenever the screen is opened

app/src/main/java/eu/kanade/tachiyomi/extension/ExtensionManager.kt

@@ -132,9 +132,6 @@ class ExtensionManager(
      * Returns the relay of the available extensions as an observable.
      */
     fun getAvailableExtensionsObservable(): Observable<List<Extension.Available>> {
-        if (!availableExtensionsRelay.hasValue()) {
-            findAvailableExtensions()
-        }
         return availableExtensionsRelay.asObservable()
     }
 

app/src/main/java/eu/kanade/tachiyomi/ui/extension/ExtensionPresenter.kt

@@ -29,6 +29,7 @@ open class ExtensionPresenter(
     override fun onCreate(savedState: Bundle?) {
         super.onCreate(savedState)
 
+        extensionManager.findAvailableExtensions()
         bindToExtensionsObservable()
     }