[2026 Season Pack] R&D Upgrade Artwork/Thumbnails Missing Across All Departments

After installing the 2026 Season Pack, I encountered an issue in Driver Career Mode.

The thumbnails/images for R&D upgrades disappear across all departments, including Aerodynamics, Chassis, Powertrain and Durability. The upgrades themselves are still present, can be researched normally and continue progressing as expected, but their artwork is missing from the R&D screen.

I am playing as Mercedes, although the issue may not be team-specific. The problem persists after advancing through multiple in-game weeks and affects both completed and in-development upgrades.

Screenshot attached.