Well, looks like I found the problem, maybe, and fixed it, maybe. Looks like there is a breaking change, indeed, added

<bdi dir="ltr/rtl"></bdi>

on each line. But I'm still not sure I'm not wrong, so I really help somebody will know what exactly happened this week, where and how, so I'll be sure I fixed it right, and everywhere it was needed. I didn't find any relevant task on Phsbricator with this change.
Igal


בתאריך יום ד׳, 9 באוק׳ 2024, 21:41, מאת Igal Khitron ‏<khitron@gmail.com>:
Hello. Maybe somebody knows, is there by chance any breaking change on Special:Watchlist in this week train? Starting from group 1 deployment time the Watchlist Manager local gadget does not work any more, with "null property" error on console. The gadget is very big, so it takes me time to locate the problem. But if there is a breaking change indeed, and somebody knows what happened, it could save a lot of time. Maybe some link formatting changed, or html page structure, or something else. Thank you in advance.
Igal (User:IKhitron)