This means that the right arrow is not visible because the styling is not applied. You can see me pointing at the right-arrow in the element inspector, and where Chromium is rendering it.
I've solved this by always adding ekko-specific classes to the arrows, and referencing those from the CSS.
We're using fontawesome for all of our icons, not glyphicons, so I set the left and right arrow classes accordingly:
The CSS, however, assumes that the arrows' classes are not changed:
https://github.com/ashleydw/lightbox/blob/master/dist/ekko-lightbox.css#L46
This means that the right arrow is not visible because the styling is not applied. You can see me pointing at the right-arrow in the element inspector, and where Chromium is rendering it.
I've solved this by always adding ekko-specific classes to the arrows, and referencing those from the CSS.