Just FYI, coming from a Thunder dev, the full contents of deleted and removed contents are available via the API, and it’s up to us to hide the contents. It’s easy to miss use cases (like another user mentioned you can see deleted comments by replying in Sync; that’s just an (easy) oversight by the dev). I’m glad to hear that they won’t even be available in the API starting with 0.19.4!!
We don’t officially publish a build for Windows, but you can build it yourself and target Windows. Here’s what the icon would look like in the taskbar. Not sure if it’s exactly the same as what you saw!