session.Log(message) not logged at all

[banyula]

Question

I recently converted several VS2022 Wix V3 old installers into Wix V6. Installers work fine, but all session.log(msg) issued in the Custom Actions are not displayed at all in the log. I tried several combinations, even setting Msilogging to "voicewarmupx" and nothing works. I remember that used to work in the past with Wix V3. Please advise how to troubleshoot.
My Custom action is writen in C# .NET 4.7.2
I use msiexec /i installer.msi /l*v logfile.log

At the beginning I thought the problem was in my development VM (Win10) but I tried the same installer in other VMs (Win10, Win11, Win2019) with the same lack of logging results. I want to emphasize, only the session.Log() messages are not displayed, all the rest is.

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