mrswed

as temporary fix I use this code

jQuery( document ).ready(function($) {
 $('.wp-block-uagb-tabs .uagb-tabs-list').on('click', 
function(e){ e.preventDefault();
  window.scrollTo( {
      top: $(this).closest(".wp-block-uagb-tabs").offset()["top"] - ($("#wpadminbar").height()||0) - 60, 
      behavior: 'smooth' 
  } );
 });
});

I found the problem in 1.2.6, a week ago I upgraded from version 1.2.4 to 1.2.6, bypassing 1.2.5. those. should not have known about such a problem. But no.
Thanks to the author for creating the topic – helped to quick resolve it ??

1.2.6 – not work ??
I roolback to 1.2.4

sorry, forgot to add current WP version – 5.3.8 (auto-update disabled)

sorry. thanks for answer. i found custom historical changes of this plugin at this site.
Please, help me: how to correctly correct its code now to disconnect from official updates and disable updates notify ?

with other plugins it get fatal error

same trouble https://github.com/Harrix/Harrix-MarkdownFile/issues/3

Soorry, I mean woocommerce version 3.0

worked on version 3.0.0 (doungrade by WP Rollback )