WMS pickFeatures not working in 2D scene?

Hello,

I’m using Cesium 1.9 to visualize Mars maps via a number of online services (WMS in particular).
For WMS layers the pickFeatures function is activated: picking features works in 3D and 2.5D scene but not in 2D (the infoBox does not open and the request is not sent).
Is that expected? Or did I missed some option somewhere?

Thank you very much for your help!
Chiara

This is a known picking bug in Cesium. We definitely want to fix it but I don’t have an ETA for you. Keep your eye on this issue: https://github.com/AnalyticalGraphicsInc/cesium/issues/2115