I was using whatever app launches when double clicking the lock button. I don’t think the issue was with the specific app launched, but with the system to launch it.
Please read https://grapheneos.org/usage#exec-spawning. You can choose not to use this feature if you can't tolerate up to a 200ms delay for cold start app spawning. Application spawning on GrapheneOS is as fast as the stock OS when using the standard Android app spawning system. We give users a choice.
GrapheneOS uses our own camera app, not Open Camera. Our camera app supports HDR+ for images and HDRnet for videos on Pixels along with zoom-based multi-camera on devices with support for it in 3rd party apps including Pixels and current generation Samsung phones. It has Night, Portrait and HDR modes on Samsung phones. Pixels don't provide those CameraX extensions yet, but they provide HDR+ / HDRnet for it in the normal Camera and Video modes. Our app also supports optional EIS. It's not as featureful as Google Camera or Samsung's camera app but it's getting better, and you don't have to use it.
Google Camera works fine as a sandboxed app on GrapheneOS. You can install GSF as a regular sandboxed app alongside Google Camera and use it. Google Photos works fine too. You can disable the Network toggle for all 3 apps if you'd like.
https://grapheneos.org/usage#camera has more information on these topics, although it needs to be updated for recent improvements in our Camera app.
You don't need Play services or the Play Store for Google Camera, but you can use those as part of our sandboxed Google Play feature on GrapheneOS to run nearly all apps from the Play Store.
Google Camera works perfectly on GrapheneOS, and unlike CalyxOS runs as a regular sandboxed app. It's as simple as following our instructions and installing GSF from our app repository followed by Google Camera:
You can revoke Network from Google Camera and GSF if you'd like. Google Photos works that way too. None of those need Play services and the Play Store, but you can use Play services and the Play Store as regular sandboxed apps on GrapheneOS. GrapheneOS has MUCH broader app compatibility than CalyxOS and without making the privacy/security sacrifices it does to integrate microG into the OS. CalyxOS has privileged Google services integration built into the OS so you don't need to install anything, but installing apps from our app repository and getting far broader app compatibility with fewer sacrifices isn't a problem for users.
CalyxOS isn't a hardened OS. It substantially reduces security rather than improving it. They roll back the security model and go months without shipping the baseline Android privacy/security updates. They shipped half the August and September security part of the way into October including multiple critical remote code execution vulnerabilities. This happens every year and throughout the year. It's not simply not hardened but not a safe option even for people not focused on privacy/security. Providing proper security updates is the bare minimum. There are still missing security patches with it today, and they're still downplaying and misleading users about it. Just check their recent news posts announcing the August and September updates while admitting they aren't providing half of them. Note: what they say about providing all the open source patches is wrong, since lots of what they skipped was open source, and the updates they skipped were mostly more important than the ones they shipped.
It works flawlessly on GrapheneOS, you can even isolate it from your main profile and run it in a second profile with just GSF. Never had any issues with it.