Issues in Overriding GET request using POST (X-HTTP-METHOD tunneling)

[ebimohi]

I need to use POST request (with X-HTTP-METHOD = GET header) instead of GET, since in some cases the query is too long and you may face to error 414 URI Too Long.

I have used the DF API for this (verb tunneling via POST), but it is odd that it behaves differently and not working properly:
if I send the payload as
{ ids: "228, 229", id_field: "id" }
it won't work, but I realized that if I use the payload as in the following, it works fine!
{ filter: "id IN (228, 229)" }

it seems a bit weird to me and if this tunneling feature is fully compatible with all queries.

thanks for your attention