Almost every time that I open the testlive client it crashes first time (the FLS ‘Failed to connect. Retry later’ message comes up and I cannot access the test game). Exiting and re-starting the client gets through the second time. So, like the title says, this is very low priority, since it just means having to start the testlive client twice each time.
This does not occur (for me) on live branch (or only rarely), but it did happen in the exact same way when I was using testlive during the crafting patch update. So it appears to be some sort of specific issue between FLS and the testlive client, not the version (if that makes any sense). I don’t know if that’s useful, but maybe it helps indicate something about the ongoing problems with FLS?