Reflections/Glitch After Creating Blocks

I’m getting a strange reflection/glitch in the display when creating blocks in shaded mode, file attached & screenshot (Rhino7 latest release, Windows 10)
Creating Block Reflections Glitch.3dm (793.6 KB)
Uploading: Block Reflections…JPG…

Hello- can you upload the image again? I do not see it here. I opened your file and made a block from the two objects - so far it seems as expected…

-Pascal