0.8.0 rc4 upgrade breaking changes?

Just upgraded to rc4 (from rc3). Loads of ui improvements which is nice. Downside is that the drone-docker plugin has started failing to authenticate. Anyone here has similar experiences or know what I could try? Have tried removing and readding secrets but same issue.

Help appreciated.

Fyi we are on 0.8.1 now, so I would recommend using a stable tag instead of a release candidate