can't back root folder when push 'Reveal in Finder'

[canonrock16]

• code-server version: 1.792
• OS Version: Ubuntu 16.04.5 LTS

Description

Once click 'Reveal in Finder' button from right click menu on EXPLORER in state of selecting folder, only the selecting folder opens in EXPLORER, and I can't see any other folders.
Even if I reload or restart code-server, this situation didn't change.

Then I found a solution.The root directory was back when I deleted the browser's history.

Steps to Reproduce

1. step 1: click 'Reveal in Finder' button from right click menu on EXPLORER in state of selecting folder

[nol166]

should be fixed by #586