I am using Fiji on Mac OS Mojave, and typically keep my self-coded macros in their own folder outside of the Fiji bundle, then symbolically link those macros into the plugins subdirectory so they show up in the menu. This worked well in prior versions.
I recently updated to version 2.1.0/1.53c build 5f23140693 and the symbolic links are no longer sufficing to get the macros loaded into the menu. I need to actually copy the ijm files into the plugins subdirectory now. The symbolic links were named exactly the same as the actual file copies. Not sure if this is intentional behavior or a regression.