.field-slideshow-slide, .field-slideshow-slide a, .field-slideshow-slide img {
max-width: 100%;
height: auto !important;
width: auto !important;
}If I comment these lines in field_slideshow.css the effects start to function properly.
The bug is this (the intended behaviour was a scrollLeft, but I think many others effects are affected):

| Comment | File | Size | Author |
|---|---|---|---|
| #5 | wrong_css_is_causing-2661500-4.patch | 537 bytes | Prashant Singhal |
| slider bug.gif | 441.86 KB | kopeboy |
Comments
Comment #2
kopeboyUPDATE:
actually that didn't work either.
Only disabling those CSS rules in the Chrome inspector was working, but after having saved the css file and reloaded it wasn't working correctly either.
It's hard to show but the problem is that you will have the coming image appearing in the middle and not coming from the right.
I tried several css "fixes" but couldn't get it to work properly.
The closest to the right function was using this:
that is, NOT applying those rules to the outer ".field-slideshow-slide".
But still.. the first image will grow/move down incorrectly on the first animation only. After a complete loop, even the first image will animate correctly :/
Comment #3
erik commentedPut this in my themes' stylesheet (referenced here: https://www.drupal.org/node/2204781) and worked out well for me.
.effect-scrollLeft .field-slideshow-slide { width: 100% !important; }(Only tested it yet in Chrome & FireFox on Os X; Can others confirm this is also working on other platforms?)
Comment #4
Prashant Singhal commentedComment #5
Prashant Singhal commentedSetting max-width property to 100% for the
.field-slideshow-slide imgcss-selector confines the original image to its parent's height and weight which is not the expected behaviour in drupal 7 on selecting the image style as none(original image). So removing the max-width:100% does the job and image no longer grows and then scrolls; rather its scrolls as expected. To confine the images to consistent dimensions, use preset or custom image styles instead.Comment #7
lamp5