Using arrow function inside v-on with key modifiers doesn't wok

[gotoprototype]

Using an arrow function inside v-on directive together with a key modifier doesn't work.

  <!-- works -->
  <input type="text" v-on:keyup="changed">
  <!-- works -->
  <input type="text" v-on:keyup.enter="changed">
  <!-- works -->
  <input type="text" v-on:keyup="e => changed(e)">
  <!-- DOESN'T WORK -->
  <input type="text" v-on:keyup.enter="e => changed(e)">

fiddle to test it yourself

I asked in a forum thread first, it was mentioned that this could be a bug.