Example on attachment 15460.

UniversalLanguageSelector has already a trigger to hide tipsy after click on it:
https://git.wikimedia.org/blob/mediawiki%2Fextensions%2FUniversalLanguageSelector/e3a480205c7cf5ce93f8bcb1c20868e2e54801cb/resources%2Fjs%2Fext.uls.interface.js
lin 301.

The sam tipsy function "hide" as used in timer, so no bug in tipsy itself (it hides after timer expired) i think.

(In reply to Florian from comment #2)

The sam tipsy function "hide" as used in timer

But that's not what I asked. I don't care about timers. Any reason not to satisfy the request in core?

(In reply to Nemo from comment #3)

(In reply to Florian from comment #2)
I don't care about timers. Any reason not to

I understand you ;)

satisfy the request in core?

tipsy has the function hide, which can be triggered in Extension (like in code of UniversalLanguageSelector). Now the problem is, in my opinion, that the hideTipsy function isn't triggered when clicked on the tipsy :)

That's my view on the problem.

Change 135010 had a related patch set uploaded by Florianschmidtwelzow:
Fix close tipsy on click

https://gerrit.wikimedia.org/r/135010

It's an error in uls, not in core. The hide was on click listener of uls-trigger, not on the tipsy itself. So, no need to change anything in core :) (not every tipsy has to close on click :))

Change 135010 merged by jenkins-bot:
Close the tipsy tooltip when clicked on it

https://gerrit.wikimedia.org/r/135010