Form only works if 2 times shortcodes added

Hello,

I add delete form to woocommerce my account page using this snippet and it does not work:

echo do_shortcode( '[plugin_delete_me /]' );

But if I do add one more delete form like this:

echo do_shortcode( '[plugin_delete_me /]' );
echo do_shortcode( '[plugin_delete_me /]' );

The first one does not work, the second form works and the user is deleted.

Is it a bug or what is the problem. Thanks