ESI Nonces second parameter and TTL

Hi,

We have recently encountered issues with nonces that were cached to long even though we had our nonces added to the list with the parameter private. Our rivate TTL is set to default value of 30 minutes.

Litespeed describes that ESI blocks can be “cached privately, cached publicly with its own TTL, or not cached at all”. In the description under ESI Nonces field it says: “optional second parameter may be used to specify cache control. Use a space to separate: my_nonce_action private”

My question is, how are the nonces cached if no parameter is specified? And are there other parameters than private that can be specified? I have searched but did not find any information on https://docs.litespeedtech.com/lscache/lscwp/cache/

Also, does it make any difference if a nonces is generated via shortcode? For example, a form plugin that allwos forms to be included on a page via a shortcode.