Setting the predefined style in the Meta field of the JLGridCard particle with META generates the class ‘jl-text-text-meta’ which obviously does not work.
I fixed this in my installation by editing the jlgridcard.yaml file:
line 517: default: text-meta
line 520: text-meta: Meta
line 517: default: meta
line 520: meta: Meta
I haven’t been able to check if the same thing is happening in other particles, as this is a widely used setting.