I observed that as well, however I didn't say anything about it because the main bug seemed to happen irrespectively.

@Trizek-WMF just got done doing some testing,

• I was able to replicate the bug on my main account, safemode on. Took approximately 2 minutes.
• I was unable to reproduce the bug on an alt account with default preferences and safemode on. (for reference, the account is "PorkchopGMX test2")

I used the same browser (Opera GX) and same computer (HP Pavilion Gaming Desktop TG01-2176z Bundle PC running Windows 11) for both tests.

This appears to be happening with my 8th generation iPad for school as well, so it looks that the bug is not specific to any web browser.

I have been impacted by this bug several times when patrolling RC and wanted to figure out why it was happening, so I did a test which involved running RC side-by-side on two different browsers (Chrome and Opera GX) on separate accounts, with RedWarn uninstalled and installed, but I couldn't replicate the bug. Nevertheless I still have suspicions that the bug could be caused by the browser I'm using (Opera GX, which is also the browser that the original reporter on en.wp (@Blaze_The_Wolf) is using) and/or my and/or their user scripts.

This error appeared as HTTP 503 when trying to log into Phabricator via MediaWiki. For a brief moment, the standard “our servers are undergoing maintenance” error appeared, but I wasn’t able to retrieve the debug information at the bottom of the page in time.