In T381187#10384224, @Bugreporter wrote:

More likely the user is using an IP shared with many people and up to 8 edits from non-confirmed users per minute can be made from single IP. Adding confirmed to the user will help in this case

Yes, now it works again.
But we had 15-20 minutes of outage just before I posted here.

Just to let you know - LiftWing/ORES has crashed again

As a creator of the other ticket (T362506) I would add that the ORES/LiftWing infrastructure in the Russian Wikipedia was quite unstable during the whole last week. There were numerous small outages, ranging from few minutes to about one hour. But the recent one was really long: 16-18 hours.
Is it perhaps possible to install some monitoring to prevent such issues in the future?

I would gladly shut down the bot when we get a global proxy protection that works.

until browser vendors get it together and make their own fixes to stop the browsers from crashing

Don't think the browser vendors will fix the issue soon. I was able to reproduce the crash even in an old Firefox 52 LTS...

Please also hide it from the general public!