Scrolling down and back up, the blog text will be painted. Moving the mouse around will also reveal some text. Works in Safari.
Not reproducible in the Nightly downloaded 4th May - rendering looks identical to Safari on first paint, scrolling, mousing over elements and selecting blocks of text made no change to the appearance of the page. Please retest and if still present specify exactly what text is not shown on first paint? (very nice design on that page btw :)
Confirmed. Will do a bisect and find the regression.
*** This bug has been marked as a duplicate of 18898 ***