Previous arrow navigation works wrong when even number of items

This is a:

• bug

• Swiper Version: 3.4.0

• Platform/Target and Browser Versions: macOS, Chrome 54,

What you did

Placing Even number of items (8)

Instantiating Swiper with following config:

{
  pagination: '.swiper-pagination',
  paginationClickable: true,
  nextButton: '.swiper-button-next',
  prevButton: '.swiper-button-prev',
  spaceBetween: 30,
  loop: true,
  slidesPerView: 3,
  slidesPerGroup: 3
}

Expected Behavior

When having the even number of items and odd “slidesPerGroup” combined with odd “slidesPerView” Swiper needs to handle Previous arrow navigation better.

Actual Behavior

Clicking on Previous arrow reveals the bug, as displayed in the gif bellow.

[bembelstemmer]

We are experiencing the same problem for some time now. It occurs when the slide count is not a multiple of the group size.

Since the content is created dynamically in our case and the group count can be switched we had to dynamically add or remove slides before initialization to workaround this problem.

[radojesrb]

We also needed to workaround this issue. Hopefully it will be addressed soon. Workarounds are time bombs…