I have the same problem with Build 571. The slightest minimisation of screen while in Roon results in a blank screen, with music still playing OK. I too have Windows 10 64 bit and onboard Intel HD Graphics 4000. Last time this happened I just updated Windows Intel graphics driver and that fixed it. This time Windows tells me the HD Graphics driver is up to date.
I don’t want to revert to the previous build (if that is even possible).
Press the bottom left “Windows button” and search for “System Information”
Provide a screenshot of your System Information -> System Summary information
Provide a screenshot of your System Information -> Components -> Display information
Logs from your affected device right after the issue occurs. Logs can be accessed by using these instructions and sent through Dropbox / Google Drive / Send.firefox.com or alternate means.
I wanted to reach out and let you know that we released Roon 1.7 Build 610, which includes some improvements that we believe should help here. Please give the update a try and let us know if it helps!