Broken for chromecast

I love HBO. But as other reviewers have noted, it has a lot of issues interacting with Chromecast, which is the primary way I watch HBO content. I can start casting a video just fine, but if my iPhone display goes dark, or if I lock my iPhone, or if I switch to another app and come back to HBO Now, the app disconnects from the Chromecast. If I reconnect to it, playback stops and I have to start over with the video. Very annoying!

Saxab00m about HBO Max: Stream TV & Movies, v1.8.0