Hi ! I’m having issues trying to create a filter on a layer group.
I added the field in “Manage Fields” in that group’s settings and all of my three layers have that field and every feature had data in it.
Now, I was able to create a filter, but nothing appears in the browser…
When I try to edit the filter it says “single layer” and I’m wondering if that may be why it doesn’t work… Since it isn’t a single layer, but a group with three layers…
Does anyone knows how and if I could solve this? 
thank you !