The active tile is not stored in the space, but in the image itself.
This results that the image user of the image space always points to
the first tile and many functionality do not work out of the box.
There are a few solutions:
- Sync the tile from the image to the space when the user switches the image or the tile.
- When the image user tile is invalid use the active tile number from the image.
- Do this on a per operator basis.
The best solution would one of the top two.
This patch is just provided as a work-a-round. and discussion for the actual solution.