cssMode: true + loop: true + autoplay result in autoplay being skipped in odd even pattern

[mmis1000]

Check that this is really a bug

• I confirm

Reproduction link

https://codesandbox.io/p/sandbox/swiper-infinite-loop-forked-qw3n85?file=%2Findex.html%3A87%2C20

Bug description

1. Make a swiper that use all options above with 3 slide.
2. Attach a slideChange handler with time and realIndex logged.
3. Wait for the autoplay to play the third slide
4. start to observe the console output

Expected Behavior

The console output like

0 seconds, slide 0
6 seconds, slide 1
12 seconds, slide 2
18 seconds, slide 0
24 seconds, slide 1
30 seconds, slide 2

Actual Behavior

The console output like

0 seconds, slide 0
6 seconds, slide 0
12 seconds, slide 1
18 seconds, slide 1
24 seconds, slide 2
30 seconds, slide 2

The slide only change one in two times.

Swiper version

11.2.0

Platform/Target and Browser Versions

windows edge

Validations

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

Would you like to open a PR for this bug?

• I'm willing to open a PR

Note

it seems cause by early return here

swiper/src/core/slide/slideTo.mjs

Line 148 in de9af3e

return true;

The loopFix.js calls slideTo to fix slide position.
And slideTo is supposed to fix the translate of swiper

swiper/src/core/slide/slideTo.mjs

Lines 150 to 151 in de9af3e

	swiper.setTransition(speed);
	swiper.setTranslate(translate);

But due to the early return in cssMode, these lines are completely skipped.

Hence the slideTo choke at the next time called by autoPlay .js at

swiper/src/core/slide/slideTo.mjs

Line 98 in de9af3e

if ((rtl && -translate === swiper.translate) || (!rtl && translate === swiper.translate)) {

due to incorrect swiper.translate