Not really a plot hole, but a missed opportunity. Dumbledore’s Phoenix could have shown up to help Snape - putting Harry in a mindfuck state as he would know both that Snape killed him and that Snape was loyal to him.

I’m a happy sublime user myself but the search UI is one thing I particularly don’t like about it.

They killed wordpad.

Isn’t that standard behavior though? I’ve never seen anything that opens a URL directly instead of just showing it to you with an option to access it.