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Lazy loading in free mode may not work #4274

bcmk opened this issue Feb 27, 2021 · 0 comments

Lazy loading in free mode may not work #4274

bcmk opened this issue Feb 27, 2021 · 0 comments


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bcmk commented Feb 27, 2021

  • Swiper Version: 5d15292
  • Platform/Target and Browser Versions: Ubuntu Linux 20.04 / Chrome 88.0.4324.182

What You Did

If both lazy loading and free mode are enabled, lazy loading may not work in some circumstances.
Basically if you move to not loaded yet slides with a mouse and completely stop moving before releasing, slides are not loaded.

I recorded a video showing it:
At first I'm opening a tab with an example built using current master branch of Swiper.
Then I'm opening a tab with the version patched with this proposed change.

Here are examples:
The version from master branch:
Fixed version:

Complete examples:
Look for master.html built from current master (5d15292) and fixed.html built from proposed patch (I'm sending the pull request as well)

Expected Behavior

Talking about provided video, slides number 9 and 10 should be loaded

Actual Behavior

Slides number 9 and 10 were not loaded

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