Icons of symlink files do not show up in IDE file manager window

RStudio IDE
1

ln -s afile.txt atest/afile.txt

list.files('atest')
[1] "NEWS.md"

Sys.info()
sysname 
"Darwin" 
release 
"17.0.0" 
version 
"Darwin Kernel Version 17.0.0: Thu Aug 24 21:48:19 PDT 2017; root:xnu-4570.1.46~2/RELEASE_X86_64" 
nodename 
"jadmins-MacBook-Pro-2.local" 
machine 
"x86_64" 

RStudio.Version()

$mode
[1] "desktop"

$version
[1] ‘1.1.383’