I don't think this is a bug so much, and it may be completely OK, but I thought I'd ask anyway, for clarity...
What's the difference between the "cloud_fraction" and the "percent_cloud" properites? I'm not sure what the goal of each should be, because in my mind they kind of sound the same. At the moment, in the current planetinfo.plist, only Lave has both properties, in all other cases only "cloud_fraction" is set, and Lave only got the additional property recently (commit 65f9d70
Edit: Actually, same dealio with "land_fraction" and "percent_land". Difference, anyone?