This happens in only one of my two accounts/profiles/users, specifically my regular user. My other account, an administrator account, is not affected by this problem.

I'm on Xubuntu 16.04.2 kernel: 4.4.0-67-generic

I first noticed this about a week ago, maybe a bit more. Applications fail to show up in the panel. The main problem obviously is when the program(s) is/are minimized, in which case I have to go to Task Manager to close it and that's all I can do. There is no way to bring it back, to maximize it. Obviously this is a big problem making this account almost useless. Simply put I can't minimize programs; if I do I lose them and the data they contain in the ether. So I have to do everything in the admin account and it is to avoid this that I created the regular account, for security reasons.

I am opened to any suggestion about this problem. The research I have done has been fruitless so far.

Thank you in advance.

  • @mook765 : Success. Thank you. Why did you answer in the comments section? I can't check "accepted answer" and you gave the correct and successful solution to this problem.
    – hockeykong
    Mar 21, 2017 at 16:22

1 Answer 1


Login as the user with the problem. Right-click the panel and choose Panel > Panel Preferences. This opens the panel-editor. Check in the Items-tab if Window Buttons is listed. If it is not listed, click on the + to add it ( you will have to scroll through the list though ).

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