macOS / 3.6.2 -- Can't export through directory link

OS: macOS 10.16, Arch.: x86_64, MuseScore version (64-bit): 3.6.2.548020600, revision: 3224f34

Earlier versions had no problem. 3.6.2 has a problem. In my MS3 directory long ago I created a symbolic link named "OutMidi" to a same-named directory in my MS2 directory. I have no trouble exporting a Midi to the directory under MS2 (using MS 3.6.2); but when I try to use the MS3 link, it complains "Can't determine file type" and won't do it.