In Hotcorners, “Toggle Desktop” works only for showing windows

[Donarsson]

The “Toggle Desktop” option, which can be activated in the “Hotcorners” category, does only work for showing windows, not for hiding them.

Steps to reproduce:
q) Enable the “Toggle desktop” function for any corner under “Hotcorners”
w) Move your mouse to that corner
e) The window(s) should disappear
r) Repeat, the window(s) should reappear
t) Repeat again
y) The window(s) don't reappear!
u) Show desktop using Ctrl+Super+d
i) Move the cursor to the corner again.
o) The window(s) reappear.
p) Repeat t-o

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: unity-tweak-tool 0.0.6ubuntu1
ProcVersionSignature: Ubuntu 3.13.0-32.57-generic 3.13.11.4
Uname: Linux 3.13.0-32-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.3
Architecture: amd64
CurrentDesktop: Unity
Date: Sat Aug 9 22:05:43 2014
InstallationDate: Installed on 2014-04-10 (121 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Daily amd64 (20140410)
PackageArchitecture: all
SourcePackage: unity-tweak-tool
UpgradeStatus: No upgrade log present (probably fresh install)

[J Phani Mahesh (phanimahesh)]

I can confirm this.

This appears to be a bug in Unity. There is nothing that can be done at the Unity Tweak Tool level to fix this.

I'll figure out the appropriate package to mark this against and redirect you there.

[Donarsson (benjamin-schwarz)]

I just found this: https://bugs.launchpad.net/ubuntu/+source/compiz/+bug/1311323

What I found seems to be exactly the same bug, so I'll just mark this one as a duplicate.

[Felix Oxley (felix-oxley)]

This bug is still present in Unity in 15.10 beta 2.

This should not be marked as a duplicate because:

1. This bug clearly explains a single problem whereas the other bug report references multiple problem.
2. This bug has a descriptive title containing the key words "Toggle Desktop"
3. The other bug 1311323 is still active despite being marked as critical 15 months ago!

Also, this bug report lists the affected package as unity-tweak-tool.
However, the affected package should be shown as Unity Desktop or similar.