P: (Mac) People masks selections are not as expected (Entire Screen or Square Area)

This is such a PITA!  Really slowing down my workflow on a large project.  Now we wait for 2 or more months!  Yet we're still paying the subscription fee at full price!!!!!!!!!

Here are my System Information

Lightroom Classic-Version: 12.4 [ 202306052221-b70c0975 ]
Lizenz: Creative Cloud
Spracheinstellung: de-CH
Betriebssystem: Mac OS 13
Version: 13.4.0 [22F66]
Anwendungsarchitektur: x64
Anzahl logischer Prozessoren: 24
Prozessorgeschwindigkeit: 3.3GHz
SQLite-Version: 3.36.0
Integrierter Speicher: 98’304.0 MB
Für Lightroom verfügbarer phys. Speicher: 98’304.0 MB
Von Lightroom verwendeter phys. Speicher: 5’690.9 MB (5.7%)
Von Lightroom verwendeter virtueller Speicher: 52’611.8 MB
Cache-Speichergröße: 106.1MB
Interne Camera Raw-Version: 15.4 [ 1508 ]
Maximale Anzahl Threads, die Camera Raw verwendet: 5
Camera Raw SIMD-Optimierung: SSE2,AVX,AVX2
Virtueller Speicher in Camera Raw: 1182MB / 49151MB (2%)
Physischer Speicher in Camera Raw: 1187MB / 98304MB (1%)
Standardvorschaugröße: 4096 Pixel
Monitore/Anzeigegeräte: 1) 4096x2160, 2) 2560x1440

Informationen zum Grafikprozessor:
Metal: AMD Radeon Pro W5700X
Anfangsstatus: GPU zum Exportieren wird standardmäßig unterstützt
Benutzerpräferenz: Automatisch

Anwendungsordner: /Applications/Adobe Lightroom Classic
Bibliothekspfad: /Volumes/Lightroom SSD/Lightroom/Aktuelle-Projekte/Aktuelle-Projekte-v12.lrcat
Einstellungen-Ordner: /Users/corneliusfischer/Library/Application Support/Adobe/Lightroom

Installierte Zusatzmodule:
1) AdobeStock
2) Aperture/iPhoto-Import-Zusatzmodul
3) Candi FX Helper
4) Epson Print Layout
5) Export LUT
6) Flickr
7) FTP Upload Sample
😎 JPEGmini
9) Monogram Plugin
10) Neurapix SmartPresets
11) Nikon Tether-Zusatzmodul

Config.lua-Flags:
EditExternally.OverridePhotoshopPath = /Applications/Adobe Photoshop 2023/Adobe Photoshop 2023.app

Just installed Lr Classic 12.4, bug is still there on my MacPro 2019. 😫

Will there be any chance of some sort of compensation? Like this has hindered so many people, what used to take me 2 mintues to edit a photo in LR now takes upwards of 10-15 because of having to mask eveything. 

Adobe has explicitly marked this thread as a "Bug" and assigned it an existing investigation ticket, indicating that they have had similar reports from other sources and the developers are tracking it internally. That doesn't necessarily indicate it's a bug in LR / Camera Raw proper -- it could be a bug in the Mac OS graphics driver, and they're working with Apple to fix it.  Unfortunately, Adobe almost never indicates when a bug will be fixed or how -- you have to wait until a release announcement fixing it. 

Adobe usually releases a new version of LR about every 8 weeks, so we might expect to see LR 12.4 next week or the week after.

I'm not really sure how good I feel saying they are "aware" of it... all the time I spent on the phone yesterday, we left the call saying it would be escalated and that I would hear back from someone within 48 hours. It was so unproductive aside from at least pointing me in the direction of Ventura probably being the issue, I continued searching the forums which is what finally led me to this thread. 

@johnrellis Any chance we can get an update on where this might stand if Adobe is aware of this? Thanks!

Same Same Same!  The OP posted this 1st week of April, and nothing!  I too am on a 2020 iMac.  LR with detect multiple people in Safe Mode, but you're lucky if it finds one person otherwise.  I guess I'm going back to 12.1 or 12 to see if that fixes it.  Doesn't seem like anyone is in a hurry to solve the GPU Bug.

I know I am super late to this party but today was the first day I hit the nail on the head with the right keywords to find someone with my same issue. I only use Camera Raw but I have been having the People (non)masking issue since April 8th when I last updated oS. I have a 2020 iMac Retina 5K with 3.6 GHz 10-Core Intel Core i9, AMD Radeon Pro 5700 8GB, 32GB 2667 MHz DDR4. I spent HOURS on chat and phone with Adobe today (before I hit this keyword jackpot), only to determine she needs to escalate the issue because fully wiping out and reinstalling all Adobe products didnt solve the issue. My almost 10 year old MacBook still running on Sur masks people like a boss - sames files that won't work on my schnazzy iMac. 

Same here on a MacPro 2019 (12core CPU, 8GB GPU and 96GB RAM) with OSX 13.4 and LR 12.3

Downgrade to older LR version did not help. LR does not recognize people anymore and selects the whole image, when using AI mask for people.