Another thing that is changed is, that you can't switch off visibility of references of a whole group in certain circumstances anymore.
This is just happening when a folder has multiple ifc files, and you pick just one of them to show. In that cases clicking the folder name doesn't work.
It does however work, when you make all files of this folder active in the model folder. In that case it is possible to switch off files in the folder.
In that example it is not possible to switchoff the reference model neither by clicking on the model folder, or the folder name where the reference is put. To fix that one needs to click on the model settings, and activate the whole folder.