We've released another hotfix for some additional stability problems and gameplay issues players have encountered in Milestone 5. Please do report any bugs you encounter on the bug reporting subforums and we'll do our best to look into them!
Bugfixes:
Fixed an issue where UFO crews were not randomising correctly, so you'd keep encountering the same species over and over (usually Sebillians). This behaviour was accidentally introduced a few weeks back in the 5.32.0 hotfix.