Sorry, fixed in 2.0.1.

@Aklapper I want a link or a button switching the mode, without manually editing the URL (and remembering how to do it).

I see. It was an error in my extension not in MediaWiki core. Closing as invalid.

I see this bug in https://github.com/mediawiki4intranet/Wikilog/blob/master/WikilogItemPager.php

Tried latest master. The same bug.

"but tag syntax doesn't expand templates inside of it," - I don't understand this phrase.

The "underlying problem" is to reduce long text (or images) fragments into small (scrollable) space but with the possibility to expand to show the full text (without scrolling) when required or desired.

I refer to collapsible elements.

T143484 was fixed in my patch at https://gerrit.wikimedia.org/r/#/c/305807/ but I've submitted the patch to a wrong changeset. Please help to add the patch to https://gerrit.wikimedia.org/r/#/c/296163/ where it belongs.

I have submitted a patch fixing this bug: https://gerrit.wikimedia.org/r/#/c/305807/

I have written code which shows [Collapse] more compactly when the element to be collapsed is inside <li> tag (and is the only collapsible child of this <li> tag).

I am the copyright holder for this file. I am releasing it under GNU GPL 2 license. Use it.

Can I expect that this will be in MediaWiki core soon?

There is a better solution which I've done by paying $10 at Fiverr.

@matmarex No, this is not the solution I need.

After all, collapsibles have been invented to save vertical screen space.

I see that there is an option in "Preferences/Recent Changes".

Oh well, this (what I need) happens if I disable JavaScript in my browser.

I've installed MediaWiki 1.26.2 with AJAX Poll 1.88.0 20140330 and MobileFrontend 1.0.0.

I found it does work indeed with modern MediaWiki if we use require_once instead of wfLoadExtension.

I won't test. I have switched to NoCaptcha and have already deleted my testing wiki.

Oh, I've found why NoCaptcha didn't work. Now I have accomplished setup.

I've changed the config for http://test.withoutvowels.org/w/index.php?title=Special:UserLogin&type=signup to use:

I tried both Firefox 44.0.2 and Chromium 47.0.2526.80 running on Debian Linux "stretch".

I reproduced the problem at http://test.withoutvowels.org/w/index.php?title=Special:UserLogin&type=signup

I switched to SimpleCaptcha on my production server, because I am afraid the bug in question may disturb new users to register.

I cannot. It was on my production server.

I tired it in my MediaWiki 1.24.1. There are no notices in debug file.

"Move it up one level, problem solved? :)"

I've added to LocalSettings.php:

In this site I want in the sidebar the section "Hebrew grammar" with subsections "Tutorial" and "Quick sheet" like the following:

I don't know since when does this happen. I suspect that the error is since installation of MediaWiki 1.24.1. This site exists a few years and was upgraded a few times.