TestItems: debugger crashes in vscode

I start the debugger on a @testitem that runs perfectly fine without debugger. Putting in a breakpoint (at some line in the @testset) and then trying to debug causes the debugger to crash:

[ Info: Julia test item process launching
  Activating project at `~/workspace/Actryx/projects/internal/AxActor/src/jl/AxActor`
Main.Testsetups.Setup.Config(5, 5, Float16(1.0))
[ Info: Now waiting for debug session
┌ Error: Some Julia code in the VS Code extension crashed
└ @ Main ~/.vscode-oss/extensions/julialang.language-julia-1.174.2-universal/scripts/error_handler.jl:5
ERROR: 
Stacktrace:
 [1] error(s::String)
   @ Base ./error.jl:44
 [2] run(debug_engine::TestItemServer.DebugAdapter.DebugEngines.DebugEngine)
   @ TestItemServer.DebugAdapter.DebugEngines ~/.vscode-oss/extensions/julialang.language-julia-1.174.2-universal/scripts/packages/TestItemControllers/packages/DebugAdapter/src/DebugEngines.jl:308
 [3] run(debug_session::TestItemServer.DebugAdapter.DebugSession, error_handler::var"#2#3")
   @ TestItemServer.DebugAdapter ~/.vscode-oss/extensions/julialang.language-julia-1.174.2-universal/scripts/packages/TestItemControllers/packages/DebugAdapter/src/packagedef.jl:162
 [4] (::TestItemServer.var"#start_debug_backend##0#start_debug_backend##1"{String, var"#2#3", Channel{Bool}})()
   @ TestItemServer ~/.vscode-oss/extensions/julialang.language-julia-1.174.2-universal/scripts/packages/TestItemControllers/testprocess/TestItemServer/src/TestItemServer.jl:525

Anyone some idea what’s wrong? Thanks.

Can you try with the prerelease version of the extension? You can switch between them in the VS Code extension manager.