On the Hungarian Wikipedia the delete actions do not appear on user's watchlist, however other actions (such as move, suppress, undelete) do. It is a known problem and was fixed at least once (maybe around 2014?) during my career but it returned again. The interesting thing is that the mobile-side is not affected. It should be fixed.
My watchlist on desktop:
My watchlist on mobile:
How to reproduce:
- Go to Kategória:Azonnali törlésre váró lapok (Category:Candidates for speedy deletion in Hungarian)
- Watchlist a random page (if you cannot find any candidates, try it later)
- Check your watchlist after few hours