aa1235561

It’s the bug alg_get_custom_order_statuses_from_cpt function. Check the folder in /includes/class-alg-wc-custom-order-statuses-core.php . This function is not solid to hanlde the bulk action.Turn back to use alg_get_custom_order_statuses would be alright. Hope the author could resolve this issue rapidly.

/includes/class-alg-wc-custom-order-statuses-core.php
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public function register_order_custom_status_bulk_actions( $bulk_actions ) {
			// $custom_order_statuses = alg_get_custom_order_statuses_from_cpt( true ); // <-- there is the bug happend.
			$custom_order_statuses = alg_get_custom_order_statuses( true ); // Turn back to deprecated(maybe) function.
			foreach ( $custom_order_statuses as $slug => $label ) {
				// translators: New Status.
				$bulk_actions[ 'mark_' . $slug ] = sprintf( __( 'Change status to %s', 'custom-order-statuses-woocommerce' ), $label );
			}
			return $bulk_actions;
		}