SE 28 on Windows 10.
I hit F5 to start the Java debugger and got the following stack (paths have been trimmed):
Stack trace written to file: C:\Users\PONTEF\AppData\Local\Temp\vsstack.
Invalid argument
mainwindow.ex 2826 mainwindow:_autorestore_from_xml(20,0) p_window_id: 339 (invalid)
mainwindow.ex 3752 debug_switch_mode(1,0) p_window_id: 339 (invalid)
tbview.ex 195 tbDebugSwitchMode(1,0) p_window_id: 339 (invalid)
debug.ex 542 activate_debug(jdwp,,8000,,30,<empty>,<empty>,,go) p_window_id: 339 (invalid)
debug.ex 1272 debug_begin(jdwp,,8000,,30,<empty>,<empty>,,go) p_window_id: 339 (invalid)
compile.ex 10608 compile:_project_command3(7,target,0,debug,C:\WS\Development\...\verticle\WorkerVerticle.java,
6: verticle 7: 0
8: 1
9: 0
10: 0
11: go
12:
13:
p_window_id: 339 (invalid)
compile.ex 3337 _project_command(debug,C:\Development\...\verticle\WorkerVerticle.java,verticle,0,1,0,0,go,,)
p_window_id: 339 (invalid)
compile.ex 2692 _project_command2(debug,0,1,0,0,go,C:\Development\...\verticle\WorkerVerticle.java,,)
p_window_id: 339 (invalid)
compile.ex 2303 _project_debug2(0,go,,) p_window_id: 339 (invalid)
debug.ex 1876 debug_go(0,,) p_window_id: 339 (invalid)
compile.ex 1849 project_debug() p_window_id: 339 (invalid)
The debug session started however but none of the debug windows were present. The next start of the debugger required me to re-open the debug toolbars and tool windows.