I can not fix it because I can not test it because I have never ever seen such device in my entire life

And I probably can't afford buying it.

I have never even heard of it.

sorry but maybe I was not clear that it is a normal pen for a touch screen:

Normally I travel often and if in the airport or in an airplane I use a pen instead of the mouse (very useful when I work in the airport: normally waiting for low-cost flights)

I think that some FP setting has been changed with 1.2.8 xx and now I cannot use the pen for moving in the map. Normally when you approach wit the mouse your pointer changes in a cross with arrows in the 4 directions, this in the past was happening when you touch the screen with the pen, now with mouse is the same, but with the pen it is not changes (it remains a dot). Maybe is there a setting I have to modify? Thanks

Just another info, with the touch screen using the finger was the same, and now there is the same issue as above. Practically now FP doesn't work with a touch screen (using fingers or pen). So you can open the enodes that you see but you cannot navigate the full map

I am sorry, I have no touch screen on my laptops and I could find no documentation about how Java handles them.

That's a real pity.
Please take a reminder about it.
Now I need to review my routine... of traveling. I use it continuously daily FP.

I rely on your help here. And the first test I want you to do is the following:

please download the zip distribution of freeplane 1.12.8_03, it still contains the old launcher and no embedded java. Run it and write here how it works. You need your own Java installation, and you can select it as described in https://docs.freeplane.org/getting-started/Command-line_options_and_configuration.html#select-java-installation-used-to-run-freeplane.

1. downloaded the bin.zip
2. I ran FP exe there, without changing any java
   

Result: satisfying the pen is working and navigating the map nicely
You can see that the java version is 1.8.0_202. Have I to change it?

This is a way of working on my personal laptop, but in the other laptop I cannot change the Java and FP bin doesn't start, so I need theinstalled FP working as the bin file.

in my personal laptop I installed java 1.8.0_431
with the result that all the font/icon sizes drastically changed in effect and not in value....

but the pen is working. In any case I go back to java 1.8.0-202 for now, and wait for your feedback how to continue.
this is quite normal.

Could you please do following tests:

• Download https://cache-redirector.jetbrains.com/intellij-jbr/jbrsdk-21.0.5-windows-x64-b631.16.tar.gz
• Download https://cdn.azul.com/zulu/bin/zulu21.38.21-ca-jdk21.0.5-win_x64.zip
• Extract both archives
• Sequentially let FREEPLANE_JAVA_HOME point to the extracted directories and run freeplaneConsole.exe from the freeplane zip distribution
• Report your observations with the touch screen.

I made the step with Zulu and running FP console, pen is working, even if FP is slower.
log zulu.zip
instead with the jbdrsdk and running FP console the pen was not working at all (like in last FP release) no navigation and no activation of button commands
log jbrsdk.zip

From this test it seems clear that the jbdrsk is blocking the pen in some way....
Wait for your feedback.

Sorry for the delayed answers but I'm travelling abroad and not always can be connected.

app.zip

Here I attached a small test app app.jar just writing all mouse events to the standard output.
You can run it from the console using java -jar app.jar.
Please test it with the both java versions using mouse and touch screen / pen and report which events are printed and which events are ignored.

The issue is related to JetBrains/JetBrainsRuntime#467 but it looks like they do not know that no events come through. Based on your information I am going to comment on the issue so that they know there is a general problem not limited to using Stylus.

As a consequence, I am going to release windows versions of Freeplane embedding different implementations of java before the issue is fixed. But I really need your report.