Caused by rMW23638cabe0a1: mediawiki.skinning: Add form elements `margin` normalization to 'normalize.less' (https://gerrit.wikimedia.org/r/c/mediawiki/core/+/656387)

Change 659258 had a related patch set uploaded (by VolkerE; owner: VolkerE):
[mediawiki/core@master] HistoryAction: Fix margins of normalized input controls

https://gerrit.wikimedia.org/r/659258

Change 659258 merged by jenkins-bot:
[mediawiki/core@master] HistoryAction: Fix margins of normalized input controls

https://gerrit.wikimedia.org/r/659258

Does this task also cover the fact that there are two radio inputs in a row on intermediate revisions, or should I open a new task about that?

@Nirmos I think that is by design, clicking the left one will bring "up" the lower selection to it, clicking the right one will bring "down" the higher selection to it.

In T273148#6786670, @Nirmos wrote:

Does this task also cover the fact that there are two radio inputs in a row on intermediate revisions, or should I open a new task about that?

No, that has always been the case. Ever since the "compare revisions" feature was added to page histories, the unstyled page has had two radiobuttons for every row, and JavaScript is used to hide (by means of a visibility:hidden; declaration) those in the left-hand group adjacent to and above the selected button in the right-hand group, and to hide those in the right-hand group adjacent to and below the selected button in the left-hand group. This much has not changed: the recent change is merely that a margin:0; declaration has been added to those buttons, causing them to sit closer together.

Test Result - Beta

Status: ✅ PASS
Environment: beta
OS: macOS Big Sur
Browser: Chrome
Device: MBP
Emulated Device: NA

Test Artifact(s):

QA Steps

✅ AC1: The spaces between the "diff" parenthesis and revision compare buttons are NOT missing.

Vector	Monobook

✅ AC2: The spaces between the two revision compare buttons are NOT missing.
see above