trouble selecting examples on the Welcome screen depending on Qt version

I have several kits and Qt versions. I'm not very surprised that Creator can't find the examples in the ones that were built with -developer-build, as separate builds outside the git tree itself. But I'm running Creator from the 5.1.0 rc1 package, so it should at least find the examples from that installation and from the 4.8 installation on my system. It doesn't find them if I select All Versions. When I open the combobox, I have 4 instances of Qt 5.1.0 (Desktop), with no way to tell the difference. Only one of them is from the RC1 binary package. If I go through them all, when I happen to hit the one that is from the RC1 binary package, only then does it finally show the examples. So basically 2 bugs here: All Versions doesn't really show examples from all versions, and also the combobox does a bad job of distinguishing between versions. The Kits tab on preferences distinguishes them well enough, so why doesn't the combobox here show the same strings as are shown there?