There is an annoying bug in Wikipedia. This seems to be a recent regression.
I am on some page on http(s)://en.wikipedia.org
I click the Message button at the top.
Over the page, comes the messages panel.
Then, I click again the Message button at the top.
Usually, that closes the messages panel.
Now, that does nothing.
Clicking on the page outside of the messages panel does nothing either.
So I cannot anymore close the messages panel.
I expect to have a way to close the messages panel.
It would be nice to repair that.