find code in modle/queue.lua

if xcur.meta.is_infinite and
        state.get_force_setting(f.index, "requeue_infinite_tech",
            const.default_settings.force.settings.requeue_infinite_tech) then
        queue.add(f, tech.name)
end

tech is not define, so nothing will add to the queue.

Hi,

Could you let me know which infinite tech fails to requeue or what error you get?

no one can add to the queue, when finished, the queue become empty

Alright I was able to find the bug and it is fixed in v1.3.6