No you aren't the only one.
My friends and I are getting that too. With any race being wiped out.
Create a support account and send them the game save + explain the problem. I currently have three tickets open for turns freezing under totally different scenarios.
https://esupport.stardock.com/
Scenarios:
1: Defeated YOR - Turn frozen. Happens every time.
2: Freezes turn shortly after planet invasion and flying in to nebula causes fleet to disappear and become unclickable.
3:Invaded a planet, hit next turn, a constructor on path goes in to a starbase and it freezes my turn on "Upgrade starbase" (unclickable)
Avoided the lock out by not invading planet, upgrading starbase, then invading planet.
EDIT: Support just got back to me and suggested I "opt-in" to receive the patch. I'm going to do this tonight. Hopefully with positive results!