On the 8/26 M10 Mac Builds, both the Flashes panel and Tinderbox Panel are completely empty. They are sized correctly, but only a white background is displayed. You should see a flash for the incredibly red tree and a tinderbox panel show all the red. This problem is not seen on Windows or Linux.
The was hit pretty hard yesterday. I would be interested to know if this still happens today.
my mac build isn't launching right now, I'll check it again when it does
this is fine in afternoon builds, marking resolved