See the second part of this thread

When flash for query option is enabled and you set mIRC to display notice in active, if mIRC isn't the active application but that the $active window is a query and you receive a notice, mIRC will flash.

You've already reported this in the very thread you referenced. Why duplicate the thread?

Because it's the right place to do it
The report on the other thread was more something I wanted to be seen by others in order to confirm it as a bug before posting here.
I remember a thread where you told me to test things or ask someone or post them in another section, before posting them here, you should be happy

Apologies, I thought that was in the bug reports thread.