Lol they are not taking this issue seriously. This is the reply I received on my ticket:
This issue is quite unusual. In this case, we recommend you to please follow the below steps and check if it resolves the issue.
- Try connecting the device to a different HDMI port
- Restart the NAS device and check if it resolves the issue
Please reply to this e-mail, if you have need any further assistance. We will be glad to assist you.
Roku Customer Support
I dont know why I even bothered to create ticket. I guess I genuinely wanted to report bug so they could fix it. Ah well.