Taffer 🇨🇦
Theia annoyance: Window size/position seems to be stored per workspace (but not in the workspace file), rather than for the app. When you open a folder with it, you get a small window in the middle of the screen.
The theme support doesn't seem quite 1:1 with VS Code; my favourite (Sunburst) should have a black background for editors, but it's using the grey background as the rest of the app.