Hi,
The same problem happened to my SJ module tabs, the other modules assigned to the SJ module tabs appear twice inside and outside the module tabs. I have checked the link given above and the only guide that I found is only basic guidance as follows:
How to use:
Install the module
Choose the position to show the module
Click Save or Apply button to save your configuration
Check it with your front-page
Perhaps it is because the other modules are assigned a position too (I put them in position slide show, same with the SJ module tabs position), which then make them appears double? Please help me to solve this.
Thanks