There is a minor bug in the process of saving pictures. If the picture doesn’t save immediately, please wait a few seconds and try again.
If the interface jumps to Homepage or Camera when saving the pictures, your phone may not be able to handle the amount of picture effects and filters applied to your photo. Try reducing the number of edits you have made to your photo. You can always add some effects and filters, save, then add more effects and filters to the saved photo. In future updates we hope to fix this issue so your phone can handle all the effects at once.