Using a chat tool such as XChat, when someone talks to you, on the KDE desktop, the XChat tray in the default system tray flashes until you click on the xchat switch to the foreground, which is a function "preference" that xchat can set in Blink, But on the GNOME desktop, this feature turns into a little extra window on the tray, notifies you of new information, and disappears after a few seconds, so it's easy to ignore this notice if you're not in the seat.
One way to solve this problem is to install the GNOME extra extension, such as "Message Notifier" "Notifications Alert" "Permanent notification", where "permanent Notification "Can let the tray on the extra pop-up window does not disappear, the other two will be in the system on the upper right corner prompts and flashing, although not fully achieve the effect of KDE, the role is enough."
Installation extension is very simple, as long as access: https://extensions.gnome.org/, on the website of the corresponding plug-ins on the page, click the off switch, to on, and so on, login can be.