Konami has released the 1.4.0 update for just the PC version of Metal Gear Solid: Master Collection Vol. 1. This update unfortunately won't be available for PlayStation 4, PlayStation 5, Xbox Series X|S, and Nintendo Switch until some time in January 2024.
It's perhaps for the best that the PC version got this update sooner rather than later. The PC release of the Master Collection was perhaps a tad bit worse off than the console versions....