A hotfixed solution for bypassing custom database tables when using ACF's get_field() function. This will ONLY work with 1.0.x versions of the plugin. Version 1.1 will include built-in support for this capability.

ACFCDTvOneDotZeroDotAnyGetFieldInterceptBypass.php

<?php

use ACFCustomDatabaseTables\Intercept\ACFGetFieldIntercept;
use ACFCustomDatabaseTables\Vendor\Pimple\Container;

/**
 * Class ACFCDTvOneDotZeroDotAnyGetFieldInterceptBypass
 *
 * This provides a 'hotfixed' approach for disabling custom database table intercept when using ACF's get_field()
 * function. This will only work with version 1.0.x versions of the plugin as a built-in tool will be available in
 * version 1.1 and beyond.
 */
class ACFCDTvOneDotZeroDotAnyGetFieldInterceptBypass {


	/**
	 * Disables the get field intercept allowing data retrieval from core meta tables only.
	 */
	public static function enable() {
		if ( $instance = self::get_instance() ) {
			remove_filter( 'acf/pre_load_value', [ $instance, 'fetch_value' ], 10 );
		}
	}


	/**
	 * Enables the get field intercept allowing data retrieval from custom database tables.
	 */
	public static function disable() {
		if ( $instance = self::get_instance() and ! has_filter( 'acf/pre_load_value', [ $instance, 'fetch_value' ] ) ) {
			add_filter( 'acf/pre_load_value', [ $instance, 'fetch_value' ], 10, 3 );
		}
	}


	/**
	 * Fetches the get field intercept instance, if available.
	 *
	 * @return ACFGetFieldIntercept|null
	 */
	private static function get_instance() {
		$plugin = acf_custom_database_tables();

		if ( ! method_exists( $plugin, 'container' ) ) {
			return null;
		}

		$container = $plugin->container();

		if ( ! $container instanceof Container ) {
			return null;
		}

		$intercept_instance = $container['acf_get_field_intercept'];

		if ( ! $intercept_instance instanceof ACFGetFieldIntercept ) {
			return null;
		}

		return $intercept_instance;
	}

}

usage.php

<?php

require 'ACFCDTvOneDotZeroDotAnyGetFieldInterceptBypass.php';

// EXAMPLE 1:
// To disable get field intercepts entirely – which means all data is retreived from core meta 
// tables only – you could simply call the following from your functions.php file or a 
// configuration plugin:

ACFCDTvOneDotZeroDotAnyGetFieldInterceptBypass::enable(); 


// EXAMPLE 2:
// IF, however, you are in a template and only want to bypass certain fields as you call them, 
// you can turn the bypass on and off as follows: 

the_field('some_field'); // custom table will be queried

ACFCDTvOneDotZeroDotAnyGetFieldInterceptBypass::enable(); 

the_field('some_other_field'); // custom table won't be queried

ACFCDTvOneDotZeroDotAnyGetFieldInterceptBypass::disable(); 

the_field('some_third_field'); // custom table will be queried