The same issue here, I tested every possible solution. build HLOD 10 times, first Auto-foliage(UEFN Material) just disappeared…, second in Launch test all trees, manually painted foliage grass are visible, and they load perfect.
Once I create Private Session, everything in the are of Player start Device - whole cell(Partition) is missing Foliage. But in some distant places it is visible.
Once I will move in different area of Map, foliage is starting to load. And what is highly annoying, it even appears later in Player start Cell.
It is big issue for our Map, and I am afraid once make it public - the problem will not be solved. AI Assistant - suggests: foliage streaming issues in Private Version sessions are known limitations or quirks in UEFN. Once you publish your island and it runs as a public/live version, foliage and cell streaming are typically more reliable, and such loading problems are usually resolved.
Though I don’t think it is correct advise. Could you help us solve the issue please?
Thank you