A couple 5.02 bugs for you:
1. Apparently, you cannot convert a low tech ground unit to a cadre when it's the top unit in that population's list. I run into this when I start a new game (haven't tried a TN start yet, so I don't know if it matters there) and immediately convert all units to cadres. It claims the unit cannot be converted because it isn't low tech. If I wait until I've trained, say, an HQ unit (those always sit above LT units in the list), then I can convert the LT unit. But while it's the first in the list, my hands are tied.
2. The list of active research projects (the one with estimated completion dates and so forth, not the "projects we could research" or "research queue" lists) doesn't like having exactly six projects. When there are six active projects, the list has no scroll bar. If you select the sixth project, the list scrolls down slightly. Having only six entries, however, it still has no scroll bar. So the first project in the list becomes inaccessible. There are several ways to work around this, including Refresh All, but it's a bug nonetheless.
I hope that makes sense.