Steps to replicate the issue: Use desktop mode on mobile with the legacy Vector (no issue on Vector 2022).
What happens?: The entire page is a mess. The top part is so dense that you can't click "contributions" or "preferences" without misclicking everything. The list of contributions shows the edits in a long and narrow form with only a few words per line.
What should have happened instead?: Should, not, be a mess? It used to look like this until yesterday.
Other information: Happens on Meta, Wikidata, Wikiquote, Wikivoyage but not on any Wikipedia project. Sorry but it's very suspicious that this happens on the day Vector 2022 rolls out for everyone.






