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After upgrading to 3.6.12 my browser is not opening pop-up windows and while closing the browser giving a message that some tabs are open and shall the same be closed? I have not encountered this problem with eralier version. Is there any known issues?

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Some of my web pages open a new pop-up window for entering credentilas and display sensitive information. After upgrading t0 3.6.12 i found that firefos is not opening pop-up windows (earlier version allowed). When I close the browser, it gives a quit message saying there are unclosed tabs and windows of firefox. shall they be saved for next time start. Also observed that the memory usage (from Task manager)is very high compared to earlier ones and the process is not closed even if I close the browser.

Some of my web pages open a new pop-up window for entering credentilas and display sensitive information. After upgrading t0 3.6.12 i found that firefos is not opening pop-up windows (earlier version allowed). When I close the browser, it gives a quit message saying there are unclosed tabs and windows of firefox. shall they be saved for next time start. Also observed that the memory usage (from Task manager)is very high compared to earlier ones and the process is not closed even if I close the browser.

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3.6.13 is also behaving similarly.