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Recently I found that window borders keep disappearing intermittently in Unity! Especially when either Google Chrome or Mozilla Thunderbird are running.

Is there a way out?

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I have the same issue and a two more: My indicator applets cease to be clickable at random time intervals and sometimes the part, where the unity launcher is hidden is cut off. – con-f-use Jun 11 '11 at 11:21

Usually restarting unity helps. You can do this by Alt+F2 and then typing:

unity --replace

Note: Don't execute this command in a terminal otherwise unity will be killed, when the terminal is closed.

This is of course not a fix. Just a way to undo the error once it has occurred. I suppose these bugs (and the ones posted in my comments to your question) will be fixed with future updates. There are many bug-reports on launchpad concerning these.

You could also try ans install CompizConfig Settings Manager Install compizconfig-settings-manager / sudo apt-get install compizconfig-settings-manager and play with the setting there. It might or might not help - depending on who you ask.

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Ok! Thanks for the prompt reply, it solved my problem, though I wish there was a more permanent solution for this bugging issue. – adityavpratap Jun 11 '11 at 11:34
As I said, there will be in the future versions. Unity isn't mature yet. If you liked the answer: How about an upvote and/or marking it accepted? – con-f-use Jun 11 '11 at 11:40

Have you enabled keeping minimized windows thumbnails under "workarounds" in ccsm? If so, disable it -- it messed up my unity bad.

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I checked the settings in ccsm. "keeping minimized windows thumbnails" is not enabled. So I guess I'll have to do with "unity --replace" till the bug gets fixed. – adityavpratap Jun 13 '11 at 13:49

I fixed this issue permanently by entering CompizConfig Settings Manager (CCSM) —if you don't have it do sudo apt-get install compizconfig-settings-manager—, going into the Window Decorations options, and changing the Command setting to compiz-decorator.

Backing out of this menu, then unchecking Window Decoration, allowing the desktop to reload, then checking Window Decoration and exiting out of CCSM.

After doing this, I can no longer reproduce the issue.

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