I'm asking for your help with an issue that seems quite easy to fix but I just can't figure it out.
We have an issue with the documentlibrary tree where the browsing after at a certain depth and some folders dib't show the containing children, blocking further browsing.
Here's an image :
Clicking on the red folder at that level doesn't show it's children-folders, it loads the folder contents as if we hit a leaf in the tree. But that red folder does have children that are folders. Even adding another test folder in the red folder doesn't change anything.
This is not a client JS problem since in the JSON response when browsing the parent level we get :