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:
1. Sync the tile from the image to the space when the user switches the
image ot the tile.
2. When the image user tile is zero copy the tile number from the image.
3. Do this on a per operator basis.
The best solution would be the first. For this patch I chose for the
per operator basis as this ensures that it will always work.