SSH console losing original keyboard layout after killing a DotNet Core v6 console app

I am currently developing a C# embedded project on a Yocto/Arm platform. It was working just fine with Dotnet Core v3.1, but I just got one annoying problem moving to DotNetCore v6: When running the software with console output, then killing the process with Control-C, the keyboard layout ended changed!
I am aware of all conditions provided By PhoenixContact to run DotNetCore v3.1 on a PLCnext, But did you have made any upgrade on theses instructions for v5 or v6? Any other cues?
Thanks a lot.
OS: 2021.0 LTS

error.png

DotNet v3.1 + SSH Putty → OK
DotNet v6.0 + SSH Putty → BAD
DotNet v6.0 + SSH MobaXterm–> OK
Conclusion: The DotNet v6.0 introduce a new feature/bug that Putty cannot handle, but other SSH tools can.