For me everything is working fine now, though it wasn't at first. When I first opened 9.0.204, the notes pane was still behaving oddly (notes were much smaller, the right-hand slider was in the middle of the pane, and the cursor did not move properly on a left click). The I opened an attached (internal) Word doc, and it showed up in tiny font, and fonts in other programs (Windows explorer, desktop) were suddenly different. Then the Brain crashed (I sent in the error report), I restarted the computer, reopened the Brain and all is now working properly.
Surface Pro 4