No output in Custom.log after upgrading Simulation to FW2026.0.2

PLCnext Technology & PLCnext Controls
1

I recently upgraded to the new version of the simulation, from 2025 to 2026 for AXC F 1152.
I noticed that there’s no output written to Custom.log in /opt/plcnext/logs/

The output used to be like this:

09.06.26 10:24:39.432 MyCustomComponent INFO - Asio version: 103600
09.06.26 10:24:40.102 MyCustomComponent INFO - void MyCustom::MyCustomComponent::OnPlcLoaded()
09.06.26 10:24:44.730 MyCustomComponent INFO - void MyCustom::MyCustomComponent::OnPlcStarted()
09.06.26 10:24:44.747 MyCustomComponent INFO - void MyCustom::MyCustomComponent::AsioWorker()
09.06.26 10:24:44.773 MyCustomComponent INFO - void MyCustom::MyCustomComponent::AsioWorker()
09.06.26 10:24:44.781 MyCustomComponent INFO - refreshing endpoint 10.0.21.1: 54321

Now the file still exists, but it’s completely empty.
Did I miss a step, didn’t see anything in the Toolchain notes?

What can I do next?

2

At the moment we are unable to reproduce this behavior on our side.

Would it be possible for you to share a minimal example project where this issue occurs? That would help us investigate this further.

3

I’m guessing you’d want to see the C++ code for the program/component?
I don’t think a PLCnext Engineer project with the resulting binaries will be helpful in your investigation?