Fedora 18 manual partitioning bug?

I've come across what seems like a bug in the new anaconda installer for Fedora 18 and not seeing anything about it elsewhere, I've come here to ask for help. Along with the new anaconda being very unstable (at least on my hardware, it has locked up on me 4 of the 5 times I've tried to install Fedora 18 with it thus far:( ), the manual partitioning won't let me set the size of any partition I try to create beyond 10 MB. No matter what I enter in the desired capacity field, it defaults to 10 MB! Oddly, if I let it create them automatically, it sets 4 partitions with sizes much larger than that, but if I then try to modify the partition size (or desired capacity as the GUI calls it) either by changing the field or using the + button, it just defaults back to 10 MB when I click Apply Changes! :confused:

While I'm new to this forum, I've been using Linux (mostly Fedora and RedHat) for over a decade now (cut my teeth on RedHat 5.0). I still don't understand why the Fedora folks felt they needed to make such a radical change to the installer, especially the partitioning GUI. I'm trying to replace my old Fedora 16 install on my laptop (an HP DV8000t, old but still solid). I'm contemplating installing Fedora 17 and then using the Fed Up utility to upgrade to Fedora 18, since the partitioning GUI in the new anaconda is stuck to say the least on my hardware. Only other option is to stay with Fedora 17 and hope Fedora 19 comes with a improved version of anaconda that my hardware gets along with.