Chrome Version: 70
OS: Chrome

What steps will reproduce the problem?
1. Plug in external CD/DVD drive.
2. Insert disk.
3. Eject disk by clicking the eject button in the file manager.
4. Wait for disk to be ejected, and re-insert.
5. Click eject again.

What is the expected result?
Disk should be ejected.

What happens instead?
Disk is unmounted from the Files app, but disk isn't ejected.

Bug is obvious, CL on the way. I filed this issue to keep track of it.