Sometimes some of the UI elements just don't work. For example, I click on the Bandwidth tab on the top, and nothing happens. I need to exit the Application form the taskbar and restart it in order to work. Its not just this specific button (Bandwidth), I wanted to check the files tab on a download, it was unresponsive. In fact no tab below the torrents main window was responsive (files, trackers, peers, etc..).
It doesn't give any error, just nothing happens.

edit: I am using the 2.53 version!

I'm seeing the same thing, very random. It can be running for weeks before it shows up.

Windows 2016 x64, Fully Updated.

Windows 7 x64 running for like 8 months (some pauses, sometimes it goes 40 days on non-stop), never got freeze issue.. other than one or two suck-balls-bluescreens.