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Removing many items from Special:EditWatchlist make only the page to refresh
Open, Needs TriagePublic

Description

From Special:EditWatchlist, I select about 1000 items using the Shift+Click trick, then I press Remove button.
No pages are removed: the page is only reloaded and some last items I had checked are unchecked.

No error message is displayed, POST request returns an HTTP 200 state code.

If I press Remove button again, the same happens.

I tried to uncheck about 20 items in addition to those which were automatically unchecked, then submit. In this case, an error message is displayed (something like “not all pages can be listed”) but all selected pages seem to be well removed.

Maybe related: T41510: Opening Special:EditWatchlist with a large watchlist hits server timeout (Create watchlist pager)

Event Timeline

Restricted Application added a subscriber: Aklapper. · View Herald Transcript

@Pols12: Hi, which specific website is this about?

This happened for me on Meta, where I had many pages in watchlist because of Translations: namespace page creations.