There was no mention of any fixes brought with 1.6.11.0 for the Boeing 747-8F within the Release Notes, and so therefore you will not have found a different experience with this aircraft in this new SU4 Beta Build: Sim Update 4 Beta (1.6.11.0) Release Notes - September 30, 2025 - Sim Update 4 Beta | MSFS 2024 / Beta News - Microsoft Flight Simulator Forums
The MSFS Team