It’s genuinely heartening to see how much LGBTQ+ cinema has progressed over the part 30 years. When the genre was new, most of its releases fell into a limited handful of storylines, which, though groundbreaking at the time, have since been surpassed by numerous other works that have moved beyond the basics. And that’s why the debut feature from writer-director Hayley Kiyoko is such a huge disappointment. The film…