Hi I stuck with one problem I m not sure if it is caused by

Question

Hi I stuck with one problem I m not sure if it is caused by Decompose or Compose Desktop but I m not able to reproduce it without router I have master detail application When I click on master menu item then I replace ruter configuration ```when menuItem is SideMenu MenuItem DirectChatMenuItem gt router replaceCurrent Configuration Conversation menuItem chat openChatId else gt router replaceCurrent Configuration Nothing ``` Here is child factory ```private fun createChild configuration Configuration componentContext ComponentContext Child = when configuration is Configuration Conversation gt Child Chat ConversationMainComponent componentContext configuration chatId storeFactory is Configuration Nothing gt Child WelcomeScreen ``` `ConversationMainComponent` contains `TextField` When I show `ConversationMainComponent` first time and I make text field focused then everything works fine When I switch to different `DirectChatMenuItem` what creates different `ConversationMainComponent` and then I try to focus text field I see exception ```Exception in thread AWT EventQueue 0 kotlin UninitializedPropertyAccessException lateinit property relocationRequesterNode has not been initialized at androidx compose ui layout RelocationRequesterModifier getRelocationRequesterNode RelocationRequesterModifier kt 32 at androidx compose ui layout RelocationRequester bringIntoView RelocationRequester kt 61 at androidx compose ui layout RelocationRequester bringIntoView$default RelocationRequester kt 59 at androidx compose foundation FocusableKt$focusable$2$4$1 invokeSuspend Focusable kt 108 at kotlin coroutines jvm internal BaseContinuationImpl resumeWith ContinuationImpl kt 33 at kotlinx coroutines DispatchedTask run DispatchedTask kt 106 at androidx compose ui platform FlushCoroutineDispatcher$dispatch$2 invokeSuspend CoroutineDispatchers desktop kt 55 at kotlin coroutines jvm internal BaseContinuationImpl resumeWith ContinuationImpl kt 33 at kotlinx coroutines DispatchedTask run DispatchedTask kt 106 at java desktop java awt event InvocationEvent dispatch InvocationEvent java 313 at java desktop java awt EventQueue dispatchEventImpl EventQueue java 770 at java desktop java awt EventQueue$4 run EventQueue java 721 at java desktop java awt EventQueue$4 run EventQueue java 715 at java base java security AccessController doPrivileged Native Method at java base java security ProtectionDomain$JavaSecurityAccessImpl doIntersectionPrivilege ProtectionDomain java 85 at java desktop java awt EventQueue dispatchEvent EventQueue java 740 at java desktop java awt EventDispatchThread pumpOneEventForFilters EventDispatchThread java 203 at java desktop java awt EventDispatchThread pumpEventsForFilter EventDispatchThread java 124 at java desktop java awt EventDispatchThread pumpEventsForHierarchy EventDispatchThread java 113 at java desktop java awt EventDispatchThread pumpEvents EventDispatchThread java 109 at java desktop java awt EventDispatchThread pumpEvents EventDispatchThread java 101 at java desktop java awt EventDispatchThread run EventDispatchThread java 90 ``` Funny is that when I select one direct chat make field focused then I select something else `Child WelcomeScreen` and I select direct chat again then everything works fine Any advice

Arkadii Ivanov · Answer

Hello To me it looks like the issue is in Compose for Desktop I would try on of the fresh Compose versions e g Decompose 0 4 0 and 1 0 0 alpha4 build348 If the issue is still there then I suggest to file an issue to <https github com JetBrains compose jb issues> Decompose does no magic here I guess Bu just in case how the configurations are defined

bartosz.malkowski · Answer

``` private val router = router lt Configuration Child gt key = MainRouter initialConfiguration = Configuration Roster handleBackButton = true childFactory = createChild sealed class Configuration Parcelable Parcelize object Nothing Configuration Parcelize object Roster Configuration Parcelize object Settings Configuration Parcelize data class Conversation val chatId Long Configuration ```

bartosz.malkowski · Answer

It seems will be good if I prepare project to reproduce this error slightly smiling face

Arkadii Ivanov · Answer

Looks perfectly fine Yeah a reproducer would be good Also you can start reducing the error by the following steps check the error is still there after every step 1 Remove the `Children animation= ` argument if set 2 Remove the `Children` function at all and use just usual `routerState subscribeAsState ` + `when ` 3 Remove the `Router` and use just usual `State lt Pair lt Configuration Child gt gt ` if compose only or `StateFlow` otherwise and replace configurations and components manually If you need a back stack seems like you don t but still then it should be `State lt List lt Pair lt Configuration Child gt gt gt `

Arkadii Ivanov · Answer

Regardless I think the issue is in Compose for Desktop it should not crash Recently I experienced another crash with focusable input fields <https github com JetBrains compose jb issues 1157> Seems unrelated but still maybe try different versions of Compose

bartosz.malkowski · Answer

Arkadii Ivanov · Answer

Thanks I will try to check it today

Arkadii Ivanov · Answer

So it looks like a bug in Compose Also reproduced in normal Jetpack Compose Filed an issue <https issuetracker google com issues 203433629>