[MlMt] Deleting parent message does not delete children when expanded

[Sam Hathaway]

On 3 Sep 2020, at 14:46, Antonio Leding wrote:

> In essence the app appears to treat a collapsed chain as highlighted 
> if the parent is highlighted.

I don’t know if Benny intended this, but it makes sense to me and I 
rely on it.
-sam