Point 1 is T86702

Other points sounds like broken (local) javascript, have a look in the error console of your browser and try to fix.

One possible fix for Internet Explorer: Remove section "фикс горизонтальной прокрутки в IE6" from https://ru.wikinews.org/wiki/MediaWiki:Common.js, because there will be no longer javascript executed for IE6

• Code changes happen to all WMF sites all the time. Some happen on the server and (usually) get logged in the Server Admin Log on wikitech, some happen on-wiki and get logged there instead.
• Please don't try to use wikitext syntax on Phabricator, it won't work.
• One task for many issues like this is likely not okay.
• #2 - you should not be hiding the siteNotice, if you opened a task for that it'd be declined/invalid.
• #7 - this works for me...
• #3, #4, #5 and #6 are unclear.
• See T802 for the projects you suggested.

This is my first ticket here. Thank you for your recommendation. I will follow them in the future.

Please be more specific. I need to open a ticket elsewhere to fix it?

We have combined these bugs, because they emerged from the same wrong correction last week (series of edits). Probably there is easier roll back all of them.

#2 This applies to a user who wants to hide this ad.

In T87337#989307, @Krassotkin wrote:

Please be more specific. I need to open a ticket elsewhere to fix it?

It's not fully clear what software is to blame for the issues some users have experienced right now.

We have combined these bugs, because they emerged from the same wrong correction last week (series of edits). Probably there is easier roll back all of them.

Okay, then we'll need to know what edits you refer to.

#2 This applies to a user who wants to hide this ad.

So they have some custom user JS that broke? Yeah I suspect there was some general local JS breakage here, that would cause such things.

In general, https://www.mediawiki.org/wiki/How_to_report_a_bug might be helpful. :)

These errors, that appeared recently and suddenly, have significant negative impact on the everyday life of our project, the Russian Wikinews, which I am an administrator in.

Generally, we are not IT specialists, but civil journalists, and are very concerned now. But it's quite hard for us to get properly through these troubles with code.

I suggest that we start with the most noticeable and annoying issue: the ugly horizontal scrollbar caused by broken very long link popped out of HTML in the page bottom. What caused it, and which exact piece of our local code should we edit to get rid of it?

I can't see these issues when looking at ru.wikinews.org (I don't doubt that you see them, However, I can't do anything about them unless I also see them)

For item 1: I can't see that string on the page, neither in a formatted version or in an unformatted version. I do not have any long horizontal scroll bar.

item 2: skipping that one per Kreniar. Do you mean their is some gadget that is broken?

item 3: Not sure if I understand your meaning correctly, but edit page has all the appropriate buttons for me

item 4: comments tab appears fine for me

Item 5: tabs appear fine for me

item 6: That url doesn't go to the page, but I don't think its supposed to. If I type google into the search bar, it goes directly to the page (On monobook, you have to press "go" not "search"). If I go to the url https://ru.wikinews.org/w/index.php?search=Google&title=Служебная%3AПоиск in goes directly to the page.

Item 7: other projects appear before languages for me.

Do these issues appear for you if you are logged out as an anonoymous user? Do you have any gadgets enabled (And if so, can you determine by disabling them one by one if a specific gadget is causing this)? Do you have any custom javascript on your Special:MyPage/common.js , Special:MyPage/monobook.js or Special:MyPage/vector.js ?

Here is a screenshot for the bug #1 in Incognito mode (anonymous/unlogged in) of Chromium:

(P. S. Hmm, I see Phabricator fails to display the bottom of the screenshot...)

The one extra issue, that may be related to all others, is the problem with "Notifications" popup. When I press "Your notifications" "0" link next to my username at top-right menu, I don't get a popup window, like in other projects, but get generally redirected to the page "Special:Notifications" ("Служебная:Уведомления" in Russian).

In debug mode in Chromium, when viewing footer-info-lastmod, I see no errors and see such properties (truncated):

innerHTML: " Последнее изменение этой страницы: 13:40, 22 января 2015.<br />↵<a href="http://sta
innerText: "Последнее изменение этой страницы: 13:40, 22 января 2015.<br /> <a href="http://stats.grok.s

outerHTML: "<li id="footer-info-lastmod"> Последнее изменение этой страницы: 13:40, 22 января 2015.&lt;br /&gt;↵&lt;a href="http://stats.grok
outerText: "Последнее изменение этой страницы: 13:40, 22 января 2015.<br /> <a href="http://stats.grok.se

textContent: " Последнее изменение этой страницы: 13:40, 22 января 2015.<br />↵<a href="http://stats.gro

Remove html from https://ru.wikinews.org/wiki/MediaWiki:Lastmodifiedat or delete the whole page to fix (or workaround) item 1

Thank you, blanking this page seemed to work for now for item 1!

#4 & #5 (tab comments - "комментарии" in russian)

all three tabs should be visible from each
screenshot (https://ru.wikinews.org/w/?curid=58513; vector; firefox, chrome; fedora):

I see the third tab on that page, both when logged in and logged out. Does anybody other than you have this issue? Can you try disabling the gadgets and user scripts you have enabled one-by-one until it reappears?

I see three tabs only if I disconnect simultaneously all the gadgets of editing (https://ru.wikinews.org/wiki/MediaWiki:Gadgets-definition). But it is no good.

Yes I, like Krassotkin, only see 3 tabs in different browsers when logged out. And, like him, see 2 tabs (incorrect) when logged in:

8. I decided to add Item 8: the Notifications Popup problem in n:ru. Here is the screenshot explaining it:
   

To #2 demo: I cannot hide (close) ad.

Looks like a broken gadget or JS.

I can't test this with my main account, as my username This, that and the other is blacklisted on ruwikinews:

<Запрещено использовать имя участника «This, that and the other». Имя соответствует следующей записи из чёрного списка: .*([\w\d]+([\s-_]+[\w\d]+){3,}).* <newaccountonly> # 4+ words>

However, I logged in with an alternative account, and discovered that the problem is probably with the HotCat gadget. It looks like your copy of HotCat is severely out-of-date.

I'll leave it to others to inform ruwikinews admins how to update HotCat. In the meantime, you can disable HotCat in your preferences and most of the problems should go away. Tell us if any problems persist after turning off HotCat.

Yes! Turning off HotCat seem to have fixed tabs and notifications problem as far as I can see! Thank you!

In T87337#990982, @TTO wrote:

...

the problem is probably with the HotCat gadget. It looks like your copy of HotCat is severely out-of-date.

@TTO: Thank you very much!

I updated HotCat (https://ru.wikinews.org/w/index.php?diff=347380&oldid=284362) and all error have disappeared.

I also increased the number of words in the name (test it please).

Let this branch will be open for a while yet others can check out it.