This is something that many of us have strongly requested ever since about 2014. Suffice it to say that I doubt Epic cares to ever implement this rather simple but essential feature. Maybe someone with coding skills could submit this feature to them, but such a hero hasn’t stepped forward in 6, almost 7 years now. I’d prefer it to work like “Right click > Keep folder locked”. It’d get a lock icon and wouldn’t ever expand unless manually ordered to. Or if that’s too complex, just have no-expand be the default behaviour with no toggle would be better than how it is now.