# Subscriptions: a misunderstanding or a bug?
**URL:** https://discourse.elm-lang.org/t/subscriptions-a-misunderstanding-or-a-bug/6826
**Category:** Learn
**Created:** [January 29, 2021, 10:11pm UTC](https://discourse.elm-lang.org/t/subscriptions-a-misunderstanding-or-a-bug/6826 "2021-01-29T22:11:48Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@jweir](https://discourse.elm-lang.org/u/jweir)
#### Post date: [January 29, 2021, 10:11pm UTC](https://discourse.elm-lang.org/t/subscriptions-a-misunderstanding-or-a-bug/6826/1 "2021-01-29T22:11:48Z")
I created an application were subscriptions were not firing when running the app in Reactor or compiled. The app does work as expected in Ellie.
```auto
type Model
= Empty
| Running Time.Posix
```
A Model starts Empty and becomes Running after a Task is performed. After
becoming Running the Running subscriptions branch is called but the subscription is not run – not **until** another event is fired such as click event.
```auto
init : () -> ( Model, Cmd Msg )
init _ =
( Empty, Task.perform Tick Time.now )
update : Msg -> Model -> ( Model, Cmd Msg )
update msg model =
case msg of
Noop ->
( model, Cmd.none )
Tick t ->
( Running t, Cmd.none )
subscriptions : Model -> Sub Msg
subscriptions model =
case model of
Empty ->
Sub.none
Running _ ->
Time.every 100 Tick
```
This is the behaviour at least on MacOS Chrome and Safari running the code through Reactor or a complied `index.html`.
But the behaviour in Ellie is what I would expect when the `Running` subscriptions branch is reached after initialization.
Here is the code running in Ellie
[https://ellie-app.com/ccVCwW7bL2Xa1](https://ellie-app.com/ccVCwW7bL2Xa1)
So, is this a bug, or I am misunderstanding something about subscriptions?
---
### Author:  [@francescortiz](https://discourse.elm-lang.org/u/francescortiz)
#### Post date: [January 30, 2021, 10:36am UTC](https://discourse.elm-lang.org/t/subscriptions-a-misunderstanding-or-a-bug/6826/2 "2021-01-30T10:36:55Z")
I don’t remember well, but I think it is a known bug. If that were true, you will have to find a workaround.
---
### Author:  [@antew](https://discourse.elm-lang.org/u/antew)
#### Post date: [January 30, 2021, 3:50pm UTC](https://discourse.elm-lang.org/t/subscriptions-a-misunderstanding-or-a-bug/6826/3 "2021-01-30T15:50:45Z")
It sounds like locally you may have a older version of elm/core, there was a fix in 1.0.3 that should have addressed that issue, and might explain why it works in the Ellie (it is using 1.0.5).
Check out [Changes in subscriptions without effect if model changes in response to command from init · Issue #1776 · elm/compiler · GitHub](https://github.com/elm/compiler/issues/1776)
---
### Author:  [@system](https://discourse.elm-lang.org/u/system)
#### Post date: [February 9, 2021, 3:51pm UTC](https://discourse.elm-lang.org/t/subscriptions-a-misunderstanding-or-a-bug/6826/4 "2021-02-09T15:51:07Z")
This topic was automatically closed 10 days after the last reply. New replies are no longer allowed.