Hi everyone I don't know if it's a bug or not but I'm using latest version of Blender 2.8 December 24 blender-2.80.0-git.4c5e76025d83-windows64 and I can't convert my strokes to geometry at all they all are gray out, disabled!
Just downloaded the December 25th Beta build and now the option to convert strokes to geo is completely gone. Bummer, just when I had some time to play with it. Hope it'll be back soon...
Edit: not gone, moved from Edit to Object mode