Correction: Using \mid does export correctly to PDF. But | and \vert do not.

Just verified that this still happens on iOS 17 RC.

I've also encountered the problem with newly generated AAC files that are of iTunes Plus (256 kbps) quality. They play correctly on my MacBook Pro (Ventura 13.5.2) Music app. They do not play correctly on my iPhone 14 Pro Max (iOS 16.6.1) Music app; they exibit the gap between the songs. However, putting the device into Airplane mode allows the music to play without gaps. So I believe it's a threading priority issue where Apple is communicating back to its servers while I'm playing MY OWN music, and they interrupt the playback to send data. So, first and foremost, they're degrading the user experience in favor of what I suspect to be data mining. Secondly ... it appears they're data mining! I really hope I'm wrong about this, and I wish someone at Apple would at least fess up to the issue. I'm really tempted to start sniffing the Wi-Fi traffic from my phone during playback to see what they're doing. Very aggravating!

I'm having the same problem. Can't use the Safari inspector because it's broken [again], and can't download the tech preview because it's "coming soon." But why can't Apple post the existing build until they actually get the "coming soon" build posted? So aggravating!

I have the same problem. Although I had the 11.3 RC installation pending in my System Preferences when it got released last Tuesday, I held off installing it because I needed to finish out my development activities on my current installation for that week. I had planned on installing 11.3 RC over the weekend, but to my dismay when I went to my System Preferences, it had already switched to the 11.4 beta 1 release. I even tried restoring my settings and downloading the developer profile again, but it kept coming up 11.4. I don't want 11.4 yet; I want 11.3 RC so I can release updated apps. So frustrating. I submitted a Feedback but report, but I get the feeling Apple no longer reads those items.