Linked patch was merged.

Also affects moves.

The blank "owner" field was overriding the "parent" field and making the latter not display due to a quirk in the way the template is coded.

No, you revealed a bug. I'd say that's worth the inconvenience of two extremely backend pages being unviewable. If it hadn't come up now, it would have come up later, most likely with something other than an obscure sandbox.

https://meta.wikimedia.org/wiki/Steward_requests/Miscellaneous/2019-09#Unblock_DannyS712_on_mediawiki

You need to create (or get an admin to create) MediaWiki:Cite_link_label_group-lower-alpha on the Javanese Wikipedia (copied from any other wiki that has that page).

This is the post-expand include size limit, and is not a bug.

The solution is to not use unmaintained extensions. I'm honestly impressed that it worked in 1.33.3 at all, given that the code hadn't been changed since 2012. (Also, this is off-topic)

Shouldn't the extension also be re-added to translatewiki.net? It was there (albeit with only one translatable message) before the original archival.

T250936: Archive the ParserMigration extension

Confirmed fixed (the linked edit was caused by a null edit to a Translations namespace page)

My patch to the translate extension would be a good idea regardless, as it fixes the case where a non-doc page is manually given the wikitext content model (through an explicit content model change or a move), and then marked for translation.

Making a null edit to the translation unit page (https://meta.wikimedia.org/w/index.php?title=Translations:Template:Engine/translatable/1/en) fixed the problem.

Appears to still be happening, at least some of the time.

Tests still need to be removed from integration/config.

Is there some reason this task isn't resolved?

In T161976#6242666, @Uzume wrote:

@Anomie Can we get your change from over three years ago merged? This is an easy and straightforward fix but Gerrit is reporting some sort of merge conflict even though Jenkins had no issues with it.

https://gerrit.wikimedia.org/r/346176

The "Wikipedia store" link can be disabled by setting $wmgUseWikimediaShopLink to false, which is a straightforward configuration change (hence, adding Wikimedia-Site-requests)

In T255381#6222403, @Ammarpad wrote:

Remove "Upload file" from the Toolbox section.

To be moved to where? or does this mean remove 'entirely'?

Removed entirely; it was added on-wiki in MediaWiki:Sidebar.

Using the non-javascript recent changes interface gives a more helpful error message:

[571489e6-9647-4fb9-a3c1-a5d53d6ea40b] 2020-06-11 04:23:13: Fatal exception of type "InvalidArgumentException"

As I said above, I'm willing to implement the task "make Template:Extension automatically populate certain parameters" from Module:ExtensionJson. I'm not willing to work on "add new information to the infobox that isn't presently supported in Wikitext", which this task appears to have morphed into.