Token generation maximum token ttl unlimited not working when lifespan input is disabled

Even though there's no documentation about this feature, when the KNOXTOKEN service param knox.token.ttl is set to -1 in the homepage topology, the token generation site indicates that the generated token lifetime can be unlimited. Combining this with configuring the knox.token.lifespan.input.enabled param of the KNOXTOKEN service to false and generating a token, result in generating a token which expiry date is: 01/01/1970, 00:59:59.

Configurations for recreation of the problem:
In homepage topology KNOXTOKEN service

<param>
      <name>knox.token.ttl</name>
      <value>-1</value>
</param>
<param>
      <name>knox.token.lifespan.input.enabled</name>
      <value>false</value>
</param>