Hi,
I upgraded our deployment to 3.0.3 today. I use the Dark theme. After logging back in I found the syntax highlighting was broken in both the desktop client and the web client - code blocks rendered correctly except that everything was in white text. Users on the default theme apparently were not affected.
I switched to the default theme and back again, and everything reverted to normal. Thought I should share for others, and maybe there's a little bugette in there...
Dave