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[List]: Growing list onLoadMore event not triggered in Firefox #11461

@ArtemJJS

Description

@ArtemJJS

Bug Description

The growing list onLoadMore event is not fired for specific resolutions in the Firefox browser. We aren't sure how long we have this issue, but it seems that some versions before everything worked well. The issue is reproducible on different laptops and even in SauceLabs.
The LoadMore event is not fired, but on changing the browser scale, it started.
In the attached screen record bug exists for 100% scale, and is not reproducible for 90% and 110% scales.

Affected Component

List

Expected Behaviour

The onLoadMore event is handled independently on scale, resolution and browser.

Isolated Example

No response

Steps to Reproduce

  1. Use List with growing=true
  2. Try load next portion of items in Firefox on different sizes

Log Output, Stack Trace or Screenshots

Screen.Recording.2025-05-06.at.11.59.15.mov
Screen.Recording.2025-05-06.at.12.01.16.mov

Priority

Very High

UI5 Web Components Version

2.9.0

Browser

Firefox

Operating System

MacOS

Additional Context

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Declaration

  • I’m not disclosing any internal or sensitive information.

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Completed

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