Currently they all look like old bugs, some going right back to Mavericks and earlier.
Console
What would you like to see change in the next version of Consolation?
Significant bugs or undesirable features limiting log, Console, and os_log as of 10.12.4.
Can you tell the difference? What is the significance of each, and do you know what to do about them? An introductory guide.
In an undocumented change, 10.12.4 prevents any access to reading Sierra’s log when in normal user mode – it requires admin mode.
Link to the slides from a masterly review by Sarah Edwards of the new log system in macOS Sierra.
Sierra 10.12.4 has had a lot of significant bugs fixed, at last. Here’s a list of those known to remain.
Sierra doesn’t use and ‘roll’ traditional log files. For how long does it keep entries in its new log?
Vastly improved over version 1, this now has over 6 MB of Help Book, with extensive reference material and links to online articles too.
Several significant improvements to CSV export to work around issues when importing to Excel and others.
The Eclectic Light Company 