Why does only 1 of 2 LG 34WP65C monitors connected through a Surface Thunderbolt 4 Dock display the incorrect resolution (1920 x 1080)?

[Richard Light1]

Why does only 1 of 2 LG 34WP65C monitors connected through a Surface Thunderbolt 4 Dock display the incorrect resolution (1920 x 1080)? The other monitor has the correct resolution of 3440 x 1440. This has only been happening for the last 4 weeks. New 8K HDMI cables have been connected, drivers checked, system restarted. Tried downloading the latest LG driver, but get an error message stating that the monitor is not LG Manufactured.

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