Multiple framebuffers in Jitter

Is there any known issue when using multiple framebuffers in Jitter or in Lua?
We have very unexpected result. Basically we are doing a bind and unbinding Loop like this:

for k,v in pairs(visibleSquareKeys) do
            for key,value in pairs(Slabs[v]) do
                if true then
                    -- use texout as framebuffer
                    jit.gl.begincapture(value["out"].name)
                    -- bind
                    jit.gl.bindtexture(value["in"].name, 0)
                    -- draw
                    Meshs[v][key]:drawraw()
                    -- unbind
                    jit.gl.unbindtexture(value["in"].name, 0)
                    -- release framebuffer
                    jit.gl.endcapture(value["out"].name)

                    -- swap slab
                    swapSlab(value)
                end
            end
        end

It seems that Jitter has problems using multiple framebuffers. We are only able to see one framebuffer.
Any help will be much appreciated!

Thanks