Happy to see the Sentinel-1 SLC burst data access now operational in the Copernicus Data Space Ecosystem (Documentation - Sentinel-1 SLC Bursts) and happy to know that SNAP can support that!
I was trying to use this new burst access capability in CDSE and trying to import the extracted bursts in SNAP. Indeed, SNAP appears to read these bursts correctly; however, I encountered some issues when attempting to run some processing on them. Please check the description of the issue I found in this post I just published:
Could it be a problem on how the burst metadata are extracted in the CDSE tool or how they are read in SNAP?