MacOS Sonoma: live captions grayed

[dozent]

Hi there,
MacBook Air M2 2022, macOS Sonoma (14.0), Ugreen Dual Display 9-in-1 Revodok USB C 4K Universal Docking Station, Dell P2421DC.
The MacOS Live captions are getting grayed as the Docking station is connected (just a gray rectangle). Without a Docking station with one monitor Dell P2421DC Live captions work properly.
Has anyone met this issue? What could be a solution?

[jameskerrane]

I have the same issue. Live Captions starts working again (and stops showing the grey box) when I stop screen sharing with DisplayLink Manager. Happening on macOS Sequoia 15.3.1.

Seems like, according to David Edmiston, this is intentional behavior from Apple, unfortunately, to block Live Captions from screen sharing. Would love a workaround or for Apple/DisplayLink to fix the issue.

Related:
- An Apple Community post of users with the same issue
- Reddit post of users with the same issue.