I installed PyCharm Community Edition via Ubuntu Software Center, and when I try to open the application it indicates that PyCharm is open and I can see the window when I hover over the icon, but it won't display on the desktop in full view. I have already tried to uninstall and reinstall this, and the issue continues to persist.
SnapOverflow
There was an issue with the display functionality on my Ubuntu where it thought that I had 2 displays. Therefore it was showing PyCharm on the other "display". Once I changed the display settings, PyCharm showed up on my display.
This happened to me a while back and i tried resetting and it worked, my recommendation, restart Ubuntu, run it, if that doesnt work; uninstall PyCharm then restart Ubuntu, then re-install, just restarting always worked for me.