Hidding is made through javascript so it probably can't be fixed :(

This should be possible with some style tweaking if we set the outer box's class to something which is
hidden in the print stylesheet but displays on screen.

(The remaining box shows on screen so you can click the 'show' button, but of course that's unnecessary in
print.)

wikipedia wrote:

Patch to fix this bug

This patch should be all that's needed to fix this bug. As suggested, it sets
the toc box's class to something that will be hidden in the print stylesheet.

Attached:

Thanks, Shane! Patch works correctly in Safari 1.2.4; gone ahead and checked it into 1.4.

wikipedia wrote:

Ah, thanks for testing in another browser, I should note that I tested with IE 6
and Firefox 1.0 on Windows XP.

The JavaScript part for tochidden ist lost in http://svn.wikimedia.org/viewvc/mediawiki/trunk/phase3/skins/common/wikibits.js?r1=6350&r2=7073

Please integrate http://svn.wikimedia.org/viewvc/mediawiki/trunk/phase3/skins/common/wikibits.js?r1=5091&r2=6350 again.

Done in r56230.

• Bug 16869 has been marked as a duplicate of this bug. ***

Reopened.

The toc gets not hidden in print when collapsed again.

Change 135692 had a related patch set uploaded by Gerrit Patch Uploader:
Hide toc caption on print when collapsed

https://gerrit.wikimedia.org/r/135692

Change 135692 merged by jenkins-bot:
Hide toc caption on print when collapsed

https://gerrit.wikimedia.org/r/135692