Example demo leaks memory

[hansole]

I previously reported an issue where I had problems with server to client notifications leaking memory.
(ocsigen/eliom#569)
The problem seems to be more general, or an additional issue. The demo application created following the example in oscigen-start also seems to leak.
If I run the example and the start a loop to get the start page, then it will leak memory at a quite high rate. It leaks from ca. 35 MB to 240MB with 10 000 requests.
term1: make test.opt
term2: let c=1 ; while true; do wget -o /dev/null http://localhost:8080/ ; echo $c; let c=c+1; done
term3: top -b -p $(pidof ocsigenserver.opt)

    PID USER      PR  NI    VIRT    RES    SHR S  %CPU  %MEM     TIME+ COMMAND
 145020 hans      20   0  871292  34852  19016 S   0,0   0,4   0:00.13 ocsigenserver.o
 145020 hans      20   0  871292  34852  19016 S   0,0   0,4   0:00.13 ocsigenserver.o
...
 145020 hans      20   0 1089084 238388  19312 S  25,0   2,9   0:29.67 ocsigenserver.o
 145020 hans      20   0 1119940 242612  19312 S  14,6   3,0   0:30.11 ocsigenserver.o
 145020 hans      20   0 1119940 242612  19312 S   0,0   3,0   0:30.11 ocsigenserver.o
 145020 hans      20   0 1119940 242612  19312 S   0,3   3,0   0:30.12 ocsigenserver.o

Ubuntu 22.04.1 LTS \n \l

cohttp-lwt                    4.0.0       CoHTTP implementation using the Lwt concurrency library
cohttp-lwt-unix               4.0.0       CoHTTP implementation for Unix and Windows using Lwt
conduit-lwt                   4.0.2       A portable network connection establishment library using Lwt
conduit-lwt-unix              4.0.2       A network connection establishment library for Lwt_unix
eliom                         10.0.0      Client/server Web framework
js_of_ocaml-lwt               4.0.0       Compiler from OCaml bytecode to JavaScript
lwt                           5.6.1       Promises and event-driven I/O
lwt_log                       1.1.2       Lwt logging library (deprecated)
lwt_ppx                       2.1.0       PPX syntax for Lwt, providing something similar to async/await from JavaScript
lwt_react                     1.2.0       Helpers for using React with Lwt
lwt_ssl                       1.1.3       OpenSSL binding with concurrent I/O
ocsigen-i18n                  4.0.0       I18n made easy for web sites written with eliom
ocsigen-ppx-rpc               1.0         This PPX adds a syntax for RPCs for Eliom and Ocsigen Start
ocsigen-start                 6.1.0       An Eliom application skeleton ready to use to build your own application with users, (pre)registration, notifications, etc
ocsigen-toolkit               3.2.0       Reusable UI components for Eliom applications (client only, or client-server)
ocsigenserver                 5.0.1       A full-featured and extensible Web server

    OCaml version 4.13.1