Dorico wants to play detached today

Oddness, I’ve got big orchestral scores and started Dorico from scratch today. I have two scores, one connects to a remote VEP and another connects to a localhost instance. Both are running BBCSO with the same settings (checked into version control).

In both scores, remarkably everything is now playing detached. Legato lines are detached, as are natural lines. There are fat gaps between the notes. Looking at the localhost VEP plugin I see the proper articulation is being triggered (long for this particular example) but Dorico is shortening all of the MIDI notes. In the Play tab I see no such thing.

I don’t see how I could debug this as the MIDI is not going external anywhere. I guess I’ll just have to restart it all and hope it goes away.