diff --git a/R/controller.R b/R/controller.R
index e2516a4..869479d 100644
--- a/R/controller.R
+++ b/R/controller.R
@@ -72,6 +72,7 @@ MWController <- setRefClass(
     },
 
     init = function() {
+      catIfDebug("Controller initialization")
       if (!initialized) {
         initialized <<- TRUE
         inputList$init()
@@ -213,9 +214,13 @@ MWController <- setRefClass(
         ),
         autoUpdate
       )
-      res$renderFunc <- renderFunc
       res$charts <- charts
+      res$outputFunc <- outputFunc
+      res$renderFunc <- renderFunc
       res$useCombineWidgets <- useCombineWidgets
+      res$initialized <- initialized
+      res$inputList$initialized <- initialized
+
       res
     },
 
diff --git a/R/input_list_class.R b/R/input_list_class.R
index 7068f67..487866b 100644
--- a/R/input_list_class.R
+++ b/R/input_list_class.R
@@ -27,10 +27,10 @@ InputList <- setRefClass(
         inputId <- input$getID()
         deps <- getDeps(input)
         for (d in deps$params) {
-          inputs[[d]]$revDeps <<- c(.self$inputs[[d]]$revDeps, inputId)
+          inputs[[d]]$revDeps <<- union(.self$inputs[[d]]$revDeps, inputId)
         }
         for (d in deps$display) {
-          inputs[[d]]$displayRevDeps <<- c(.self$inputs[[d]]$displayRevDeps, inputId)
+          inputs[[d]]$displayRevDeps <<- union(.self$inputs[[d]]$displayRevDeps, inputId)
         }
       }
     },
@@ -57,6 +57,7 @@ InputList <- setRefClass(
     updateHTMLVisibility = function(name, chartId = 1, inputId = NULL) {
       if (!is.null(session)) {
         input <- getInput(name, chartId, inputId)
+        catIfDebug("Update visibility of", input$getID())
         shiny::updateCheckboxInput(
           session,
           paste0(input$getID(), "_visible"),
@@ -107,7 +108,6 @@ InputList <- setRefClass(
 
     updateRevDeps = function(input) {
       if (!initialized) return()
-
       for (inputId in input$revDeps) {
         revDepInput <- getInput(inputId = inputId)
         if(!identical(revDepInput$value, revDepInput$updateValue())) {
diff --git a/tests/testthat/test-controller.R b/tests/testthat/test-controller.R
index 34b36a6..95142ed 100644
--- a/tests/testthat/test-controller.R
+++ b/tests/testthat/test-controller.R
@@ -42,6 +42,8 @@ describe("MWController", {
     controller1$setValue("a", "test")
     expect_equal(controller1$getValue("a"), "test")
     expect_equal(controller2$getValue("a"), "a")
+    expect_true(controller2$initialized)
+    expect_true(controller2$inputList$initialized)
   })
 
   it("accesses parameters of a given input", {