It always starts on the first icon for me. Do you have the region free loader enabled?
This was a problem with previous versions but was fixed in beta 51 or so. Can you update and try again?
I've just attached beta 52:
Adds support for custom app icon background images. Place these in your theme directory as follows:
- appbackground.png: 56 x 56 pixels. This is the background for unselected apps or empty spaces
- appbackgroundselected.png: 56 x 56 pixels. This is the background for the currently selected app
- cartbackground.png: 59 x 59 pixels. This is the background for the region free loader / cart when it is not selected
- cartbackgroundselected.png: 59 x 59 pixels. This is the background for the region free loader / cart when it is currently selected
The launcher will automatically detect whether the images have an alpha channel so it makes no difference whether the images have transparency or not. They will automatically be masked to the correct shape with rounded corners and the tab for the cart icons. You will get an error in log.txt if the images are invalid or the wrong size. You do not need to change any settings - the presence of the images is enough (as with wallpapers).
Here's a screenshot of my Mario theme using custom app backgrounds:
View attachment 27792