I created a new file and found that "Tile 0" floating UI text gets stuck to the image canvas on Tile 0. When zoomed out, the UI text doesn't cover any of the drawing area, but when zoomed in can cover a few pixels.
This is a bug that hasn't occurred before, and so far has appeared on just one .pyxel file.
Repro steps:
1. Create new file with default settings.
2. Zoom in and observe "Tile 0" UI text.
3. Zoom in farther and observe "Tile 0" UI occlude a few pixels on drawing canvas.
4. Save/close/reopen file and observe that "Tile 0" remains and won't go away.