mysterious [jit.movie @output_texture 1] not working with jit.gl.render setup

Hi all ,

I have a weird I cannot get here:

TWO setups:

1. When I use [jit.movie @output_texture 1 @texture_name N] with [jit.world name] it's works perfectly fine, I do not have to "bang" the jit.movie object to output the texture, to say a [jit.gl.videoplane @texture N]

2. If I do the same setup with the traditional
qmetro 60Hz
t b erase
jit.gl.render name
jit.window name

[jit.movie @texture_output 1 @texture_name N] will not work and send the texture to [jit.gl.videoplane @texture N]
unless I bang it.

Is this normal behaviour or is it a bug.

thanks very much for you help