According to the article these are nightly (not stable) builds. So, some things may be broken and un reported at this time. You can see known bugs in the device section on the LineageOS wiki page.
Iirc LineageOS always names their builds nightly, right? I don't think they have any real stable builds. (as in no builds tagged stable, their nightlies should be considered stable afaik)
Thanks for the post! I haven't been checking for my Pixel XL for several months (March) and lost hope it would ever get a new build, but the build is there. Thanks again and to anyone involved in the effort.