Shift+Esc kills Slimjet instead of launching Task Manager

[adambe_edu]

Steps to reproduce:
1. Install Slimjet with the slimjet_amd64.deb file (downloaded from http://www.slimjet.com)
2. Launch Slimjet from the Desktop by:
right-clicking on Desktop > Applications > Network > Flashpeak Slimjet
3. Press Shift+Esc (or try to launch the Task manager from the menu)

Result:
The Browser is killed (all windows and tabs are immediately closed).

Expected result:
Slimjet's Task manager is launched.

Workarounds:
Start slimjet from terminal window by running:
/usr/bin/flashpeak-slimjet
Or to fix the Desktop shortcut edit it by running:
sudo vi /usr/share/applications/slimjet.desktop
change the line:
Exec=/usr/bin/flashpeak-slimjet %U
to:
Exec=/usr/bin/flashpeak-slimjet

Configuration:
Slimjet: Version 9.0.1.0 (based on Chromium 49.0.2623.75 (64-bit))
Debian 8.4 (DebianDog64-Jessie : Linux jessie64 3.16.0-4-amd64 #1 SMP Debian 3.16.7-ckt11-1+deb8u6 (2015-11-09) x86_64 GNU/Linux)
​Openbox 3.5.2​