Using WP 5.4.2 adding Gutenberg blocks via ACF, most dash icons seem to show without issues when pulled in as an ‘icon’ (e.g. facebook, sort, businessman) but for some reason businesswoman doesn’t. e.g:
acf_register_block( 
      array(
        'name' => 'business-testimonials-block',
        'title' => __('Business Testimonials Block'),
        'description' => __('Testimonials about Business.'),
        'render_callback' => 'business_acf_block_render_callback',
        'category' => 'formatting',
        'icon' => 'businesswoman',
      )
    ); 
I’ve also tried ‘dashicons-businesswoman’ but no luck.
				
		
	 
	
	
		
	
		
	
		
		
	
	
		
		
			
		
	
	
		
		
		Im’not sure about it, but it seems that all Misc dashicons icons are not available for acf blocks
				
		
	 
	
	
		
	
		
	
		
		
	
	
		
		
			
		
	
	
		
		
		Thanks  @juandbb – your response prompted me to take another look, and I think I might have solved it: https://core.trac.wordpress.org/ticket/51245#ticket