Hi Kat and thesmokingrunner,

Thanks for the quick replies.

My watchlist limit seems to be set at 1000 items - it was a lot less when I first joined and has increased a few times over the years, jumping from 500 to 1000 within the last year - about when the heart symbol was introduced? 

Clearly, I add a lot of items to my watchlist! I've reached this 1000 items limit a few times and the behaviour is the same. It looks like I'm adding new items - I click the "add to watchlist" button, which seems to work as normal and the heart fills black and the "Add to Watchlist" button changes to "add to list" - so I think it's saved - but it has not saved it. 

I access ebay from several different computers - a pc and imac at work and another imac at home, plus an ipad everywhere, so it's not a log in problem, or page refresh, or related to a particular item. The only thing which resolves it is to go to my watchlist and delete a load of the old / finished items - I'll delete 3 or 4 hundred of the oldest ones - and after that there seems to be space for new items. This has happened more than once, just this week, and again a few weeks ago when it was last full. I don't mind deleting the old items, I just wish the system would tell me my watchlist was full and / or not pretend to add new items. 

If you can be in touch with the developers, it would also be really useful to have the "hearts" on the 'recently viewed' page - that way I could see if they were being watched or not. To go back and re-watchlist the various items I thought I'd added during the last couple of days (when my watchlist was full), I had to pull up the recently viewed items, then click them all one by one to go to their pages to see if they were actually being watched - most of them weren't so I had to watch them again. Having the hearts on the recently viewed page would mean I could watch them directly from there, by clicking the heart.

Like I said before, the bug applies to the "add to watchlist" button, but not to direct clicking the heart, the heart won't go black, it stays white so doing that a few times makes you aware that there's a problem. But clicking the Add to watchlist button turns the heart black and you think everything is ok. There should be a popup saying "Watchlist Full!" or something.

I said my watchlist is full at 1000 items, but actually it only ever goes to 999 or 998 items - I don't think I've seen it at 1000 - I was just rounding up as it feels like that's where the limit would be set.