Updating `slidesPerView` and `breakpoints.*.slidesPerView` does not correctly refresh the slider

Prinzhorn commented 4 months ago

Check that this is really a bug

[X] I confirm

Reproduction link

https://codesandbox.io/p/sandbox/swiper-slides-per-view-forked-cl2tdw?file=%2Findex.html%3A30%2C8

Bug description

When updating slidesPerView and breakpoints.*.slidesPerView the slider will be in an inconsistent state and only "fixes" itself by resizing the viewport to the breakpoint and back.

Screencast from 2024-07-01 10-15-30.webm

Expected Behavior

No response

Actual Behavior

No response

Swiper version

swiper@11

Platform/Target and Browser Versions

Ubuntu 23.10 with both Firefox 127.0.2 and Chromium 126.0.6478.114

Validations

[X] Follow our Code of Conduct
[X] Read the docs.
[X] Check that there isn't already an issue that request the same feature to avoid creating a duplicate.
[X] Make sure this is a Swiper issue and not a framework-specific issue