[2020] Is the rogue agent spawn mechanism bugged again...?

...or was I just lucky the last few months?

After the last TU I had 100% positive spawn rate (i.e. you'd get the warnings, and within a few moments they'd be there).

Now I'm back to where it was before the TU. Last 5 or 6 times I got the warning, dramatic music playing, then...nothing. After about 15 seconds the music just fades out.

C'mon Massive! What gives?!?