I have two 2019 MBPs - one was on 11.2 and the other on 11.4. Sound was working through USB-C -> audio out on a Dell P2715Q on 11.2 but not on 11.4 as of last night.
I updated the 11.2 MBP to 11.4 this morning and now audio out is not working. So seems like something changed in 11.3+.
kshipley
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