Hey Kovid, I was going to submit this directly as a bug to get fixed up but I wasn't sure of the right terminology. I
think window is right.
From a software development standpoint, you configure your application window to have a name which appears in several places in Windows. The one place it's not showing up properly for Calibre is in the Taskbar Properties. When I go to the Hide Inactive Icons Customize, because I want to tell it not to auto-hide the Calibre icon when it's running in my taskbar, it's listed in that Customize Notifications list as <no title>. Unfortunately, without a valid "title" or window name there, it won't remember the Always Show setting after you've shut Calibre down or restarted your system. So can you get that window title or name fixed up in an upcoming release?
And if anyone wants to confirm what it's actually called, please do. I know I came across it before and had some other software fix it, but that was so long ago, and I'm not a programmer either, that I can't really remember what to call it. (Which is why I came out here to discuss it rather than just making a ticket directly.)
Thankies!