Ion-header inside ion-tab not working

You can fix it like this:

.bar-subheader.has-tabs-top{
  top:93px !important;
}

.has-subheader.has-tabs-top{
  top:137px;
}

It’s a known issue, discussed in this post:

I see you opened an issue for it, thank you. :slight_smile:

https://github.com/driftyco/ionic/issues/4336