Here's a fun thing Whalebird does. Used it for the first time in a while ( i tend to use the website for Mastodon) and it's done this twice. If I click on media. it opens it on the other display with no window controls

Even if I click on other tabs in #WhaleBird it's still up and there's no way to close it without just exiting Whalebird. Might have to find a new desktop client.