Debugging does not work

[AurelVU]

Description

A clear and concise description of the bug and how to reproduce it.
I created this config for launch.json

{
    "type": "kotlin",
    "request": "launch",
    "name": "Kotlin Launch",
    "projectRoot": "${workspaceFolder}/app",
    "mainClass": "com.example.TelegramBotKt",
    "preLaunchTask": "build"
}

My program runs but does not stop at breakpoints

Extension version

MacOS 15.4.1, Kotlin kotlinc-jvm 2.1.20 (JRE 17.0.15+0), vscode 1.100.1

Additional context

plugin-logs.txt

[RDamman]

I have the same problem but in my case, a JavaFX application, breakpoints only work in the mainClass as specified in launch.json. In other code the breakpoints get grayed out at the start of debugging. Also the debug console gives no information at all.