FT mobile showing posts I've already seen ("last read" marker not being updated)
Some previous discussion is embedded in the infinite scroll thread:
https://www.flyertalk.com/forum/tech...l#post32988862 but IMO this issue warrants its own thread, and I didn't manage to locate one on a quick search, so starting a new one...
Originally Posted by alex67500
(Post 32988862)
Hi,
Posts aren't being marked as read again when using chrome mobile. They're fine on the 'current' page, but any subsequent pages being loaded by infinite scrolling, posts aren't being marked as read as I browse them. When I return to my subscriptions, they're still marked as not read, and if I click on first unread it will take me to the start of a page I've already read.
Originally Posted by IBJoel
(Post 32993711)
I could not replicate this. Are you using Desktop View? Was working perfectly in Mobile Skin.
Originally Posted by Zorak
(Post 32994065)
It's not. This still happens to me with some frequency on mobile skin, when there is more than one page of new messages. (I'm not sure if it happens *every* time that's the case, but it definitely still happens.)
Although the problem has always been somewhat variable in nature (and I recognize that makes it hard to troubleshoot), it has been noticeably worse (for me anyway) in the last 5-7 days, happening a *lot*, and in some cases requiring opening the same thread 3-4 times to properly set the last-read marker, even though I am infinite-scrolling to the very end of the page, waiting a number of seconds (just in case the "update-last-read-marker" operation is one of the last things the forum code does), etc. |
If you can get me a thread where this is happening to you (as well as browser and mobile/desktop skin), I can try troubleshooting more
|
The problem of not correctly recording the last-read message only seems to happen on the mobile skin. i.e. if I last visited a thread in mobile, the next time I go back (whether the next visit is mobile or desktop) often I find it did not correctly record that I already saw those messages and it shows me a bunch again.
On the other hand if my last visit to a thread was on desktop, I have never noticed a problem where the next subsequent visit to that thread starts from the "wrong" message. There is no one thread to give you -- this happens widely across all threads and all forums that I follow on FT. So I don't think it's like a database issue where a particular thread gets messed up (as sometimes happens following a merge) All I can say is, if you use mobile skin with any frequency, and your primary method of reading FT is by following subscribed threads, you will notice this issue. My starting point on mobile is usually: https://www.flyertalk.com/forum/subs...n&folderid=all |
Originally Posted by Zorak
(Post 34318062)
All I can say is, if you use mobile skin with any frequency, and your primary method of reading FT is by following subscribed threads, you will notice this issue. My starting point on mobile is usually: https://www.flyertalk.com/forum/subs...n&folderid=all
And often*, even after reading to the last post on such a thread, returning to the above linked page still shows the same thread as having new messages, even there there really aren't any. And it's not an issue with the summary page being cached, force-refresh of the page still shows the same thing. *But not always, so as above, I realize that if it's not 100% reproducible then it's harder to troubleshoot. But someone with access to the code could maybe step through in debug mode and take a better guess where things are going wrong. https://cimg4.ibsrv.net/gimg/www.fly...026dc4f612.jpg |
Thanks for bumping this. I've taken the habit of refreshing each thread when I reach the last post to avoid it, but it's not ideal. I don't want to harass the admins either, it's annoying but not life threatening.
IBJoel For me it happens in absolutely every single thread to which I'm subscribed, on mobile and desktop (using Chrome), so take your pick. |
Originally Posted by alex67500
(Post 34318565)
.
IBJoel For me it happens in absolutely every single thread to which I'm subscribed, on mobile and desktop (using Chrome), so take your pick. BTW I omitted from my earlier replies the other info Joel requested -- I'm using Opera on Android. |
I can confirm this, and I am sure IBJoel previously confirmed he had replicated the issue in the other thread. It happens when the number of unread new posts in a thread means you scroll across a virtual page boundary, whatever your page boundary is set to, the default and mine is 15.
Requires: use of mobile experience
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