As the title says, popup notifications (for incoming messages) have stopped showing up. I've had them set up so that the last received message is always displayed in the bottom right corner of the screen, until I right-click to dismiss it, or left-click it to read it. Since setting it up, I haven't touched the settings, nor have I added any other plugin. How can I resolve this problem? I know it might be a pretty basic stuff, but I have no idea how to solve it.
I'm using Miranda-NG for GTalk / GoogleHangouts / Jabber, and my popup settings are shown on the screenshot below. Clicking on Live Preview or Preview does absolutely nothing.
Spoiler
(https://forum.miranda-ng.org/proxy.php?request=http%3A%2F%2Fi.imgur.com%2FdMLzVmj.png&hash=42d86bb677fcb96b668c8848501f323664052ebf)