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Slider 'resizing issue'

Hi all! :wave:
I encounter an issue with a sidebar, that should toggle between visible and hidden, to allow the main content to take up the entire width of the screen.
When starting the animation (press ‘fullscreen’ button in lower right corner), the sidebar disappears (correct) and the main container grows (correct), BUT the content, a Slider, behaves very strangely during the resize. It does not seem to expand to 100vw, or if it does, the slide action sends the slides too far through the viewport.

I may be overlooking a very simple width setting in my Slider module, perhaps in the mask. Granted I do not entirely understand the Slider module, any help would be greatly appreciated.

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