One more attempt to fix #4867

tests/osproc/tworkingdir.nim

@@ -0,0 +1,16 @@
+discard """
+  file: "tworkingdir.nim"
+  output: ""
+"""
+
+import osproc, os
+when defined(windows):
+  # Windows don't have this issue, so we won't test it.
+  discard
+else:
+  let dir1 = getCurrentDir()
+  var process = startProcess("/usr/bin/env", "/usr/bin", ["true"])
+  let dir2 = getCurrentDir()
+  discard process.waitForExit()
+  process.close()
+  doAssert(dir1 == dir2, $dir1 & " != " & $dir2)