Loading up Minecraft 1.16.5 and attempting to enter a realm, the app hangs indefinitely on the "Connecting to realm" screen.

Reviewing the logs finds the following entries (several lines not part of the bug but are included for context):

[12:22:57] [Render thread/INFO]: Backend library: LWJGL version 3.2.1 build 12
[12:22:58] [Render thread/ERROR]: GLFW error collected during initialization: GLFW error during init: [0x10008]13092654480
[12:23:01] [Render thread/INFO]: Reloading ResourceManager: Default

<Some logs snipped for brevity>

[12:23:14] MCO Compatability Checker #1/INFO: Realms is available for this user
[12:23:15] [Realms Texture Downloader/INFO]: Environment: authHost='https://authserver.mojang.com', accountsHost='https://api.mojang.com', sessionHost='https://sessionserver.mojang.com', servicesHost='https://api.minecraftservices.com', name='PROD'
[12:28:40] [Render thread/ERROR]: ########## GL ERROR ##########
[12:28:40] [Render thread/ERROR]: @ Render
[12:28:40] [Render thread/ERROR]: 65544: Cocoa: Failed to find service port for display
[12:30:39] [Render thread/ERROR]: ########## GL ERROR ##########
[12:30:39] [Render thread/ERROR]: @ Render
[12:30:39] [Render thread/ERROR]: 65544: Cocoa: Failed to find service port for display
[12:30:40] [Render thread/ERROR]: ########## GL ERROR ##########
[12:30:40] [Render thread/ERROR]: @ Render
[12:30:40] [Render thread/ERROR]: 65544: Cocoa: Failed to find service port for display
[12:35:27] [Render thread/ERROR]: ########## GL ERROR ##########
[12:35:27] [Render thread/ERROR]: @ Render
[12:35:27] [Render thread/ERROR]: 65544: Cocoa: Failed to find service port for display
[12:40:02] [Render thread/ERROR]: ########## GL ERROR ##########
[12:40:02] [Render thread/ERROR]: @ Render
[12:40:02] [Render thread/ERROR]: 65544: Cocoa: Failed to find service port for display
[12:40:07] [Render thread/INFO]: Stopping!

This appears to be an issue discussed extensively here:

https://github.com/MinecraftForge/MinecraftForge/issues/7558

Resulting in a patch/workaround here:

https://github.com/glfw/glfw/pull/1833

It's not clear to me how related these are, and whether this upstream fix needs to be included in a patch for 1.16.5.