Vray 5 (3dsmax 2021): VFB doesn't show during the rendering

Hi,
I’ve a problem with the VFB.
When I launch a render from 3dsmax, I can’t see the VFB during the rendering.
After it finished, I have to minimize 3dsmax and maximize again and I can see the VFB.

Never happened with Vray Next (used with 3dsmax 2016 & 2018 )

Any tips?

Thanks in advance

Nevermind… I haven’t seen that the VFB was minimized.
Sorry.

The VFB may be off-screen. Try opening the MAXScript Listener (Scripting>MAXScriptListener) and type the following command to reset the VFB’s position:
vfbControl #pos "reset"

oh, nice. thank you for this tip!