Close window shortcut & missing icon in top panel

[saivinob]

@NicoBeno, welcome.

@NicoBeno

I can't close windows with Alt+F4. All the windows show in the File menu the shortcut Ctrl+Q (Figure 1). Is there a way to change this? I try to change the value of close action windows in the dconf-editor, but is alredy in the Alt+F4 value.

Can you check in 'Keyboard Shortcuts', if there is another action using same shortcut key combination (Alt+F4).

@NicoBeno

In my app-indicator (at the right of my top panel) appears sometimes a missing icon and when I click on it appears an empty menu (Figure 4). Sometimes the missing icon is gone and instead appears a second network icon (Figure 3). Its menu is subtly different to the original (Figure 2). Im posting an image!

The two network indicators are from 'Indicator Applet Complete' (Fig.2) and 'Notification Area' (Fig.3). A logout-login should clear it (at it happened in my case) or a reboot should work as @olek mentioned.

Regarding missing icon in the panel indicator area, there is another thread with similar question. Personally, I have not seen one but I'm guessing it could be 'ayatana indicator application'. I could be wrong though.