Sen2Cor Adjacency Range

I’ve read in several topics that sen2cor does not process swath or tile edges correctly. The issue appears anywhere that there are not valid pixel values all the way to the extent of an image. In most cases, the outer 1 km of pixels becomes unusable. I experimented with some settings and found that an adjacency range of 0 seems to minimize the issue.

Is the setting defined in greater detail in any of the documentation? This i the best I’ve found:
Range of adjacency effect: reflected radiation from neighbourhood in [km]

What are the unintended consequences of disabling the adjacency setting?

Has this issue been addressed at all in the 2.5.5 release? Mosaicing images with this issue is a tedious process.