pkg upgrade forgot how to upgrade packages?

The update process works the same as before, but in the log files it 
looks like "pkg upgrade" can't distinguish between updating packages and 
simply installing new ones.

If I remember it correctly, pkg logs events in to messages, but I have 
it configured in syslog.conf to log into separate pkg.log. In the past 
(for many years) it was logging like this:

# grep mariadb /var/log/pkg.log
Jan 22 21:48:42 host1 pkg[4859]: mariadb106-client upgraded: 10.6.19 -> 
10.6.20
Jan 22 21:57:54 host1 pkg[4859]: mariadb106-server upgraded: 10.6.19 -> 
10.6.20
Mar 26 21:40:11 host1 pkg[86634]: mariadb106-client upgraded: 10.6.20 -> 
10.6.21
Mar 26 21:41:02 host1 pkg[86634]: mariadb106-server upgraded: 10.6.20 -> 
10.6.21

But there are almost no "upgraded" messages for the last 6 months. I say 
"almost" because there are few of the for some packages.

Upgrade of MariaDB looks like this now:

Oct  8 21:14:29 host1 pkg[9522]: mariadb1011-server-10.11.13 deinstalled
Oct  8 21:14:45 host1 pkg[9522]: mariadb1011-client-10.11.13 deinstalled
Oct  8 21:18:37 host1 pkg[9522]: mariadb1011-client-10.11.13_1 installed
Oct  8 21:19:01 host1 pkg[9522]: mariadb1011-server-10.11.13_1 installed

16 "upgraded" messages out of 213 messages in total:

Oct  8 21:14:05 host1 pkg[9492]: pkg upgraded: 2.2.0 -> 2.2.2
Oct  8 21:14:52 host1 pkg[9522]: apr upgraded: 1.7.5.1.6.3_4 -> 
1.7.5.1.6.3_5
Oct  8 21:14:54 host1 pkg[9522]: easy-rsa upgraded: 3.2.2,1 -> 3.2.3,1
Oct  8 21:14:54 host1 pkg[9522]: gdbm upgraded: 1.24 -> 1.25
Oct  8 21:15:03 host1 pkg[9522]: git upgraded: 2.49.0 -> 2.51.0
Oct  8 21:15:03 host1 pkg[9522]: libdeflate upgraded: 1.22 -> 1.24
Oct  8 21:15:03 host1 pkg[9522]: libffi upgraded: 3.4.6 -> 3.5.1
Oct  8 21:15:04 host1 pkg[9522]: libgpg-error upgraded: 1.51 -> 1.55
Oct  8 21:15:04 host1 pkg[9522]: libnghttp2 upgraded: 1.65.0 -> 1.66.0
Oct  8 21:15:04 host1 pkg[9522]: libogg upgraded: 1.3.5,4 -> 1.3.6,4
Oct  8 21:15:04 host1 pkg[9522]: mpdecimal upgraded: 4.0.0 -> 4.0.1
Oct  8 21:15:06 host1 pkg[9522]: nettle upgraded: 3.10.1 -> 3.10.2
Oct  8 21:15:06 host1 pkg[9522]: openjph upgraded: 0.21.2 -> 0.21.3
Oct  8 21:15:17 host1 pkg[9522]: screen upgraded: 5.0.1_3 -> 5.0.1_4
Oct  8 21:15:18 host1 pkg[9522]: sqlite3 upgraded: 3.46.1_1,1 -> 3.50.2_1,1
Oct  8 21:15:19 host1 pkg[9522]: sudo upgraded: 1.9.17p1 -> 1.9.17p2

And it's not just about MariaDB, it's a simple example. Another huge 
example can be PHP - all extensions were previously logged as "upgraded" 
and now they all are "deinstalled" and "installed".

What was changed and is there some way to log the pkg upgrade events 
like it was before?

We are using this logged events to have some overview about what 
packages were installed as new dependencies of existing packages and so on.

I know it was not perfect even before so I made some homegrown script to 
track these changes but I still think it would be better if these events 
will be correctly logged by the pkg itself if the pkg has all the 
knowledge what is installed before upgrade, what has to be upgraded and 
what has to be installed as new dependency.

Kind regards
Miroslav Lachman