set value 5000 on float16 becomes 4999.68

[spyder]

Can you help?

I defined a group object of type float16 (09. 2 byte floating point).

When I set the value (manually or via /cgi-bin/scada-remote/request.cgi) to 5000, I get 4999.68.

There are no event scripts attached to the group object.

I am running on:
HW: Reactor v2 (i.MX28)
SW: 20200720

What am I doing wrong?