Multi-size mosaic problem

snap
#1

Hi all I tried using multi-size mosaic (to prevent resampling as preprocess for the mosaic process) on 3 S2 L1C images. I get the result on the image below:

image
image1740×839 270 KB

I am using the latest SNAP Version (7.0).

Since S2 images were big, I also tried subsetting the 3 images and repeated the steps above. The result were also the same.

How to do this correctly?
Should I just resample them and use mosaic (not multi size mosaic)?

#2

can you please check the dimensions (rows and colums) of the output mosaic?
It seems that the spatial resolution was not set correctly, for example as discussed here: