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Items with images disappears in Endless scroll mode

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ListView (Mobile)
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Maxim
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Maxim asked on 22 Jul 2014, 09:15 AM
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

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Kiril Nikolov
Telerik team
answered on 22 Jul 2014, 01:17 PM
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
 
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Maxim
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answered on 22 Jul 2014, 01:36 PM
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
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Maxim
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answered on 22 Jul 2014, 01:40 PM
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".
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Petyo
Telerik team
answered on 24 Jul 2014, 10:46 AM
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
 
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Maxim
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answered on 25 Jul 2014, 11:43 AM
Thank you for the information,

Looking forward to see the update.

Have a nice day.
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Maxim
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Kiril Nikolov
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Maxim
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Petyo
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