Hi all, these issues are due to the recent change from AbstractPlotting to Makie as the base package of the Makie environment.
The crossover point for InteractiveDynamics (and thus Agents) was in v0.15 - can you upgrade that package and report back?
Edit: if you can’t get this to work automatically, try ] rm GLMakie, then ] up InteractiveDynamics and finally ] add GLMakie back. I think the hook is that AbstractPlotting is sitting around in the manifest and is not allowing the upgrade to happen easily.