Ah! Was not related to js at all, which is why I was having so much trouble narrowing this down! In core/modules/system/css/menu-dropdown.theme.css on line 77, .js .menu-dropdown ul positioning...
I don't see either of the following in the backdrop modules listing but could port one to backdrop:
https://www.drupal.org/project/views_refresh
https://www.drupal.org/project/views_autorefresh
I think this example from the Bootstrap site is interesting because it shows different elements; we might be able to use some of these ideas:
https://getbootstrap.com/docs/4.0/examples/
Posted6 days 6 hours ago by Luke McCormick (cellear) on:
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If you check here:
https://backdropcms.org/project/usage
you will see 385 available officially projects, excluding core that means 384 modules.
But if you add modules that are moved to core - https://backdropcms.org/user-guide/features-added-core - 62 items - it results that 384 + 62 = 444 Drupal7 modules have been ported to Backdrop CMS.
At least for my understanding.
I don't know whether some of available modules are not ported but new, created first for Backdrop.
Thanks :)