Several of the interactions with the site are rate-limited and will bring up a warning notice if you do them repeatedly. For example, you can only flag comments every 3 seconds.
Typically, these notices stay up for as long as you are required to wait; so, for example, if you get a notification when attempting to flag a comment, just wait until the notice disappears, and you know you can try again without getting the notification.
When you vote to close and select the wrong button in the dialog, a common flow is to cancel the dialog with Esc (or clicking Cancel if you need a mouse to communicate with your computer) and then reopen the dialog. However, this action too is throttled, and will produce a warning message:
However, unlike many other notices of this kind, this one stays up for much longer than 3 seconds. By informal timing, I get 20 seconds for this particular notification.
Could the notification please disappear after 3 seconds? (Or, if 3 seconds is too short for people to see the notification, maybe just make the period 5 seconds. Tangentially, see also *5 seconds is too long, but if it must be, then give me a visual cue) Or, if you can, just don't rate limit this particular feature.
In other words, the design where the notification disappears when time is up is an obscure but helpful usability hint; I want it for this notification, too, if indeed it has to remain rate-limited.