Greetings @Isaga,
I haven’t heard of such an observation before from others. Your logs don’t reveal too much info, so it’s not clear at the moment what might be happening on your system.
This “grey screen” that appears, how often would you say this occurs?
Also can you determine whether it’s Weston or your .NET application that is outputting the grey screen?
Finally, when this issue occurs could you try and get logs from the individual Weston and .NET containers? Perhaps one of these containers is throwing some kind of error or warning.
Best Regards,
Jeremias