addCustomDatabaseColumn() not working with searchable.

[nshiddqui]

Describe the bug
when you will use addCustomDatabaseColumn() as a column
it is using the alias name as column in where.

To Reproduce
Steps to reproduce the behavior:
use to add column with addCustomDatabaseColumn()
and using search from frontend. it will throw error

example :-

$func_full_name = $columns->func()->concat(['first_name' => 'identifier', ' ', 'last_name' => 'identifier']);
$columns->addCustomDatabaseColumn($func_full_name, 'full_name')

[nshiddqui]

any update?