Contradiction in the arrangement of slider images and direction of the carousel in FireFox and Chrome

[NabiKAZ]

I use jQuery FlexSlider v2.7.1

In the LTR mode, don't have problem, But in the RTL page, the images on firefox and chrome don't synced sorted. There is a contradiction in the arrangement of slider images and direction of the carousel.

See screenshots:

FireFox 64.0.2 (64-bit)

Chrome Version 71.0.3578.98 (Official Build) (64-bit)