Currently, if even one layer in a layerGroup has querying disabled, the entire layer group is unequeryable. Even if the unqueryable layer isn't visible at the given scale it still happens.
What I think should happen is that a layergroup only returns "no queryable layer" if all layers are non-queryable at the given scale.
Marking as resolved on 2.9.x , if you want and nothing breaks during the next month on master we can backport it to 2.8.x too
Perfect! thanks Andrea!
Mass closing all resolved issues not modified in the last 4 weeks