Items with images disappears in Endless scroll mode

6 posts, 0 answers
  1. Maxim
    Maxim avatar
    16 posts
    Member since:
    Jun 2008

    Posted 22 Jul 2014 Link to this post

    Hello,

    I have a list view with Endless scroll mode enabled. My list items have relatively big height (more than a half of page height) and have images.
    Then I scroll an item the bottom of the item reaches list view top, the rest visible portion of the item gets disappeared. 
    You can see this behavior here: http://dojo.telerik.com/eJuB/3

    If items does not have any images - it works fine. Item can be scrolled from top to bottom and its internals are visible all the way.

    Is it a bug? How can I prevent the item from erasing until it fully gets out of the view?

    Thank you
  2.
  3. Kiril Nikolov
    Admin
    Kiril Nikolov avatar
    2598 posts

    Posted 22 Jul 2014 Link to this post

    Hi Maxim,

    I have tried to reproduce this issue in a Chrome and IE10 browser, but to no avail, please check the following screencast and let me know if I missed something:

    http://www.screencast.com/t/va9XGuFEin

    What is the browser/device that you are testing on, how can I reproduce the issue?

    Regards,
    Kiril Nikolov
    Telerik
     
    Join us on our journey to create the world's most complete HTML 5 UI Framework - download Kendo UI now!
     
  5. Maxim
    Maxim avatar
    16 posts
    Member since:
    Jun 2008

    Posted 22 Jul 2014 in reply to Kiril Nikolov Link to this post

    I can reproduce it on IE 11 (desktop), Latest Chrome (both desktop and Android 4.0, 4.1, 4.2).
    My QA team can easily reproduce it too on a various devices.

    Take a look here: http://www.screencast.com/t/2muwaUU2Eo
  7. Maxim
    Maxim avatar
    16 posts
    Member since:
    Jun 2008

    Posted 22 Jul 2014 in reply to Maxim Link to this post

    As a guess, may be you should try a smaller window size? Also data disappears after a short delay (about 0.5 ms). On desktop is easily reproducible by scrolling with mouse wheel slowly, "click by click".
  8.
  9. Petyo
    Admin
    Petyo avatar
    2444 posts

    Posted 24 Jul 2014 Link to this post

    Hi Maxim,

    The behavior you observe is due to the virtualization implementation - items above certain threshold (actually, half of the page height) are removed and recycled at the bottom to facilitate new items. I think that this may be tweaked to avoid removing items which are still visible, and have logged it for future investigation.  


    Regards,
    Petyo
    Telerik
     
    Join us on our journey to create the world's most complete HTML 5 UI Framework - download Kendo UI now!
     
  11. Maxim
    Maxim avatar
    16 posts
    Member since:
    Jun 2008

    Posted 25 Jul 2014 in reply to Petyo Link to this post

    Thank you for the information,

    Looking forward to see the update.

    Have a nice day.
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