just upgraded to v5.3.
i run lighttpd on port 8088 due to nginx serving other things on port 80 on the same pi.
i would request that the upgrade script doesn't overwrite this if it detects a port that is non-standard and previous configuration was working fine.
not difficult for me to change back to my favoured port but it's a step i'd rather not take if this was implemented.
no biggie. just throwing it out there.
the only other post i see suggested states that lighttpd has to run on port 80 which isn't what is happening in my case.
Much duplicate, many topics.
May already be possible with lighttpd 1.4.46 or above, see also Lighttpd daemon won't start - #11 by Bucking_Horn