The checkbox filter has an option to put it in a collapsible fieldset:

However, if you don't want it collapsed (and so don't select this option), there is no fieldset at all, which raises A11Y flags:

Alerts

Missing fieldset

What It Means

A group of check boxes or radio buttons is not enclosed in a fieldset.

Why It Matters

A fieldset provides a visual and structural grouping of related form elements. It is typically necessary for groups of check boxes or radio buttons where a higher level description (called a legend) is necessary to understand the function of the check boxes or radio buttons. The description will be identified by a screen reader only if provided in a fieldset legend.

How to Fix It

Determine whether the grouping of check boxes or radio buttons has or needs text that explains the purpose of the check boxes or radio button grouping. If so, mark up the group within a fieldset and put the group description in a legend element.

The Algorithm... in English

Two or more checkbox or radio input elements within a form have the same name value, but are not enclosed in a fieldset.

Would it make sense to include sets of checkboxes in a non-collapsible fieldset by default, and make it collapsible if the toggle is on?

Has anyone has considered possibly tying Views selective filters function into BEF? I ran the module through the coder upgrade, adjusted the dependencies in the .info, and it installed, but I haven't gotten it to work yet.

For D8 they just made it an extension of BEF: (and it seems to work quite nicely)
https://www.drupal.org/project/selective_better_exposed_filters

PHP Error on PHP 7.3 (and 7.2)

Deprecated function: The each() function is deprecated. This message will be suppressed on further calls in theme_select_as_links() (line 521 of /Users/andy/Sites/fantsuam-new/httpdocs/modules/contrib/better_exposed_filters/better_exposed_filters.theme.inc).

Backdrop 1.11.3
Better Exposed Filters 1.x-3.4.1
PHP 7.3

Issue and Fix on Drupal.org
https://www.drupal.org/project/better_exposed_filters/issues/2946585

I'll see if I can apply the same patch.

...since token is incorporated into core (not as a separate module). PR coming.

The .js should be combed through a bit to make sure deprecations are fixed for the latest jQuery.

A non-exhaustive list to start from:

• jQuery.fn.change() event shorthand is deprecated
• jQuery.fn.click() event shorthand is deprecated
• jQuery.fn.bind() is deprecated
• jQuery.fn.focus() is deprecated
• jQuery.fn.resize() event shorthand is deprecated

I have experienced this especially on mobile, I haven't finished typing it already start searching. Wondering if something can be done to improve this situation. I saw the issue posted and fixed. But it's for Drupal 8.

https://www.drupal.org/project/better_exposed_filters/issues/2921744

An internal accessibility review of a site that is using BEF's "Select as Links" functionality came back with this:

...these links should be within a list element similar to a nav with correct aria-current in use.

I'm going to see how easy it would be to convert this implementation to use <ul> and <li> instead of <div>.

Select filters shown as checkboxes in a fieldset do not show when collapsed :

This would be addressed in better_exposed_filters.css :

/*
 * Prevents collapsed filters from disappearing completely
 */
fieldset.bef-select-as-radios-fieldset.collapsed legend,
fieldset.bef-select-as-checkboxes-fieldset.collapsed legend {
  position: relative;
}

Two problems :
1- The css file would be attached by :
$form[$filter_id]['#attached']['css'][] = backdrop_get_path('module', 'better_exposed_filters') . '/better_exposed_filters.css';
but the css file has been relocated in a css subfolder, so it's ignored...

2- Even after introducing this rule in my custom css, the result is not very good :

I finally got the expected result in overriding a rule from views.css stating :

views-exposed-form .views-exposed-widget {
    display: inline-block;
}

with in my custom css :

.block .views-exposed-form .views-exposed-widget {
  display: block;
}

Fine, but now, this is no more specific to better exposed filters...

I'm not experienced enough in backdrop views to confirm this is a views' bug, or this should be locally addressed by BEF…

Rewrite the text displayed as shown on BEF settings like so:

and you will see no result of the override, but two warnings:

    Warning: Undefined array key "#options" in better_exposed_filters_exposed_form_plugin->exposed_form_alter() (line 1115 of /var/www/html/docroot/modules/contrib/better_exposed_filters/views/better_exposed_filters_exposed_form_plugin.inc).
    Warning: foreach() argument must be of type array|object, null given in better_exposed_filters_exposed_form_plugin->exposed_form_alter() (line 1115 of /var/www/html/docroot/modules/contrib/better_exposed_filters/views/better_exposed_filters_exposed_form_plugin.inc).

Developing a site locally and logs the following error. Can a patch be committed to the next release?

Deprecated function: The each() function is deprecated. This message will be suppressed on further calls in theme_select_as_links() (line 521 of C:\wamp64\www\domain\modules\better_exposed_filters\better_exposed_filters.theme.inc).

It looks like tests exist from D7 -- we should get them working here.

When using the Select as Links BEF option, changes are not being announced to screen readers.

There are a number of commits in the respective Drupal 7 version of this module which should get pulled over here.

@jenlampton I see you're looking for a co-maintainer. Mind if I join to try to bring over some commits from Drupal 7 and maintain here?