I do face the same issue, here is the stracktrace from the crash.
We experience it only on iOS 16 when attempting to open a PDF file in UIWebView.
Dispatch queue: com.apple.coreanimation.imageprovider.concurrent (11)#0 (null) in os_unfair_lock_lock ()
#1 (null) in CGPDFPagePurgeResources ()
#2 (null) in CGContextDrawPDFPageWithDrawingCallbacks ()
#3 (null) in CGContextDrawPDFPageWithProgressCallback ()
#4 (null) in -[UIPDFPageContentDelegate drawLayer:inContext:] ()
#5 (null) in tiled_layer_render(_CAImageProvider*, unsigned int, unsigned int, unsigned int, unsigned int, void*) ()
#6 (null) in CAImageProviderThread(unsigned int*, bool) ()
#7 (null) in _dispatch_client_callout ()
#8 (null) in _dispatch_continuation_pop ()
#9 (null) in _dispatch_async_redirect_invoke ()
#10 (null) in _dispatch_root_queue_drain ()
#11 (null) in _dispatch_worker_thread2 ()
#12 (null) in _pthread_wqthread ()
#13 (null) in start_wqthread ()