Clicking next in the Table of Contents doesn't scroll forward about oobit HOT 3 CLOSED

Explanation

The shortcode being used to display the Table of Contents was

[bw_posts post_type="oik_presentation" post_parent=. 
orderby=menu_order order=ASC posts_per_page=20 
offset=0 ]

It's the use of offset=0 that prevented the list from scrolling.
Removing the parameter resolves the issue.

But see also a similar problem: bobbingwide/oik#13
Should the shortcode detect the use of potentially incompatible parameters?
I somehow doubt it.

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Now what we really want to do is to make the list display in multiple columns.
That can be achieved using CSS

ul.bw_list { columns: 2; }

and while we're at it set list-style: none; and line-height: 1.4;

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Doesn't need a theme or plugin change since we can change the shortcode and use the CSS block to adjust the styling.

I believe that this problem was answered by: https://bobbingwide.com/problem-solving/oik_presentation/steps/step-25-expert-opinion/
I'm the expert. I can't remember why I used offset=0 in the original page from which the shortcode was copied, I do know that the original shortcode was written before WordPress 4.4 and any pagination logic.

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