[OnePlus 5T  ROMs, Kernels, Recoveries, & Other Dev] giddie:
Great job; feels great :)

I finally made the big switch for my daily driver on Saturday, coming from stable OOS 5.0.4 (not a beta). The install (including Open GApps stock) went pretty smoothly: you guys have done tremendous work with this. Thank you!

I've been keeping a list as I encounter difficulties with my new setup. Some of the issues I've found workarounds for already, and others I haven't been able to resolve on my own. I'd appreciate help from anyone who knows a fix or workaround. Some of these are general Lineage issues, rather than dumpling-specific. Where should I report these? What additional data would be useful?

LiveDisplay colour profile is not available unless rebooting from an already-booted system. For instance, rebooting to TWRP and rebooting from there will prevent the LiveDisplay colour profile from appearing in the settings, and existing colour profile settings will not be enforced. Simple workaround: just reboot.

Smart Lock settings are empty. The menu entry is there under Security & Privacy, but presents an empty screen, with no Smart Lock setting entries. This happens when Security & Privacy > Trust agents > Smart Lock (Google) is enabled when you reboot. Workaround: disable Trust agents > Smart Lock (Google) before reboot, and enable after reboot is complete.

Fingerprint services are not available for apps. This problem developed after some time, and I'm not sure what triggered it. (Possibly installing Magisk?) Fingerprint unlock works fine, but apps report a "problem" with the fingerprint scanner. The error message differs for each app, but all are very generic error messages, or fingerprint options simply don't appear.

I haven't been able to find a way to make OTG settings appear. Has anyone yet found a pattern to when this appears and disappears?

I'm unable to play OGG Vorbis files in any Android app. VLC plays them fine, and the same files played fine in OOS. They are picked up fine by library scanners, but when attempting to play the file, it hangs for a while and then the player skips to the next file, suggesting a codec issue. I can't find anything like this online: Vorbis support has been baked into Android for years. I haven't noticed any issues playing ringtones, which I hear are often Vorbis files, except that a couple of ringtones seem to be duplicates under different names (a stretch, but possibly a related issue).

There is currently no setting to pin apps to a 16:9 ratio, which is an option in OOS. Certain apps do not behave well in 18:9. Is this already planned? If not, is there a place I can put in the feature request?

Screen gestures don't currently offer the ability to open an app. I really miss this feature, which was in OOS :( Again, I suspect this isn't the proper place for the request. Where should it go?

The main camera sensor seems to work well, but the secondary camera sensor seems to be completely unavailable. Even using the OnePlus camera (Magisk module), the sensor does not switch in low light. Also, 1080p @ 60fps seems to be unavailable. Is there anything I can do to help with any of this?

Display > Prevent accidental wake-up isn't working for me.

System > Status Bar > Battery > Show percentage when charging (default): this doesn't seem to do anything for me currently. The status bar does not show the percentage when charging. It does switch to the "charging" icon, and when enabling Battery > Battery percentage it shows the percentage (all the time), but that percentage-when-charging feature seems broken currently.

Gestures > Swipe fingerprint for notifications: this isn't working for me. Maybe this is related to my other issues with the fingerprint sensor? (see 3)

Expanded desktop: I could really use a quick tile for this. OOS had a navbar button that provided a similar function. Where should I request this?

That's my list! Please let me know what I can do to help troubleshoot these issues. I'm a software engineer and very familiar with Linux, but not Android internals. My phone is rooted (Magisk). Now that I'm finally running the ROM, I look forward to doing my best to help others here, in order to pay it forward.

Many thanks again for your hard work [MENTION=3208754]codeworkx[/MENTION] and [MENTION=4833385]Evisceration[/MENTION].