I'm not entirely sure if this is an SE issue, or if this is the Window Manager issue, but I'll post it.
Notice that the menus pop below the task bar and as such the items are inaccessible.
SlickEdit Pro 2016 (v21.0.2.0 64-bit)
Serial number: FE10296
Licensed number of users: Single user
License file: /home/bjkurlex/slickedit/bin/slickedit.lic
Build Date: February 23, 2017
Emulation: Vim
OS: Linux
OS Version: Ubuntu 14.04.5 LTS
Kernel Level: 4.4.0-64-generic
Build Version: #85~14.04.1-Ubuntu SMP Mon Feb 20 12:10:54 UTC 2017
Processor Architecture: x86_64
X Server Vendor: The Cygwin/X Project
Memory: 28% Load, 14837MB/52631MB Virtual
Shell Information: /home/bjkurlex/slickedit/bin/secsh -i
Screen Size: 1920 x 1200, 1920 x 1200, 1600 x 900
Project Type: (Other)
Language: .sh (Bourne Shell)
Encoding: Automatic
Installation Directory: /home/bjkurlex/slickedit/
Configuration Directory: /home/bjkurlex/.slickedit/21.0.2/
Migrated from: /home/bjkurlex/.slickedit/21.0.1/
Windows info hosting Cygwin/X:
OS: Windows 7 x64
OS Version: 6.01.7601 Service Pack 1
Memory: 87% Load, 3388MB/3887MB Physical, 6008MB/10576MB Page
Cygwin/X updated weekly.