DataVirtualization sample looses ability to reload thumbnails at some point

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Assessment

Difficulty
4/5
Estimated time
3-5 days
Newbie friendliness
25/100
Issue type
Bug
Clarity
Needs clarification
Activity status
Stale
Domain
frontend

Research direction

Start by locating the XamlDataVirtualization sample and reproducing the behavior with the pictures library containing about 1800 pictures. Scroll through the GridView repeatedly, pause, and then check whether the empty items can reload through further scrolling. Done means thumbnails remain recoverable after the pause in both reported scenarios.

Written by the indexing model from the issue text.

Description

The XamlDataVirtualization has a flaw in both scenarios tested so far in the pictures library hosting circa 1800 pictures.
While both scenarios create thumbnails nicely as we scroll, scrolling up and down several times throughout the entire grid, and then making a pause (no scroll whatsoever) will at some point drop the process memory to a low value (60MB in my case), after which the GridView displays empty items with seemingly no way to get them back through scrolling.
Unfortunately I have no clue on a possible solution to provide you.

Dominant language
JavaScript
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