[2021] Possible bug: can't complete some railjack defense nodes

I managed to complete everything in Venus Proxima including the defense node there, but when I moved on to Veil I got stuck on the defense node there (iirc it's called Arc Silver?)

Both times we completed 5 waves and extracted, then we're immediately snapped back to the railjack (no warp animation), Cephalon Cy gives a basic "we failed this mission" dialog line, then we head back to the dry dock since the next node hasn't unlocked, the Mission Complete screen pops up... and the next mission node still isn't unlocked.

Did this twice and the results were the same. Wondering if we have to stay past 5 waves in the veil?