In the absence of an “official” updated FS2020 bug-list, I’ve gone through the “bug-logged” topic and captured every item reported or updated under the “FS2020” tag in the last 12 months. Out of nearly 130 items, here are the top 25, including when they were reported, and how many votes each has so far. Note that I didn’t READ every thread, only noted the reported date and vote count.
It’s entirely possible that some of these issues have already been resolved, or that some are actually FS2024 bugs that were accidentally tagged with FS2020. But I know most of these bugs are still present in FS2020, including in the SU16 beta. (The “MSFS 2020 will not shut down fully” issue IS fixed by the SU16 beta.)
Also note that I obviously have no idea which of these items are being “worked on” or “under investigation” or anything. We’ll need to wait for an official update for that information.