[4.0] Timezone field - duplicate class

[brianteeman]

If you view the source of com_config you will see duplicate classes. This is invalid markup

<div class="controls"><select id="jform_offset" name="jform[offset]" class="custom-select" class="custom-select">
 
The first one comes from

joomla-cms/libraries/src/Form/Field/GroupedlistField.php

Line 151 in 4b01c64

$attr .= !empty($this->class) ? ' class="custom-select ' . $this->class . '"' : ' class="custom-select"';

The second one comes from

joomla-cms/libraries/cms/html/select.php

Line 222 in 4b01c64

. ' name="' . $name . '"' . $attribs . ' class="custom-select">' . $options['format.eol'];

[Quy]

Related PR #20196

[brianteeman]

You can see the same in other places such as the module style field

[brianteeman]

Closed as a duplicate