1. Put 2 breakpoints (e.g lines: 28, 38) in Java method
2. Stopped a the first breakpoint - OK as expected
3. Sent "resume" command
4. Sometimes the "continue" response sent after the following "stopped" event - so our debugger client doesn't stopped at second breakpoint.

Following is the log:
2017-12-18T13:38:53.48+0200 [APP/PROC/WEB/0]ERR {"command":"continue","type":"request","seq":"17","arguments":{"threadId":13}}

2017-12-18T13:38:53.48+0200 [APP/PROC/WEB/0]ERR 18/12/2017 11:38:53.398 - [com.microsoft.java.debug.core.EventHub.lambda$start$28] - [FINE] -

2017-12-18T13:38:53.48+0200 [APP/PROC/WEB/0]ERR JDI Event: BreakpointEvent@com.company.mta123.simple.HelloServlet:38 in thread http-nio-0.0.0.0-3000-exec-3
2017-12-18T13:38:53.48+0200 [APP/PROC/WEB/0]ERR 18/12/2017 11:38:53.399 - [com.microsoft.java.debug.
2017-12-18T13:38:53.48+0200 [APP/PROC/WEB/0]ERR 2017/12/18 11:38:53 core.protocol.AbstractProtocolServer.sendMessage] - [FINE] -
2017-12-18T13:38:53.48+0200 [APP/PROC/WEB/0]ERR [[EVENT]]
2017-12-18T13:38:53.48+0200 [APP/PROC/WEB/0]ERR Content-Length: 131
2017-12-18T13:38:53.48+0200 [APP/PROC/WEB/0]ERR {"event":"stopped","body":{"threadId":13,"reason":"breakpoint","allThreadsStopped":false,"type":"stopped"},"seq":25,"type":"event"}

2017-12-18T13:38:53.48+0200 [APP/PROC/WEB/0]ERR 18/12/2017 11:38:53.403 - [com.microsoft.java.debug.core.protocol.AbstractProtocolServer.sendMessage] - [FINE] -
2017-12-18T13:38:53.48+0200 [APP/PROC/WEB/0]ERR [[RESPONSE]]
2017-12-18T13:38:53.48+0200 [APP/PROC/WEB/0]ERR Content-Length: 118
2017-12-18T13:38:53.48+0200 [APP/PROC/WEB/0]ERR {"success":true,"request_seq":17,"command":"continue","body":{"allThreadsContinued":false},"seq":26,"type":"response"}

2017-12-18T13:38:53.48+0200 [APP/PROC/WEB/0]ERR 18/12/2017 11:38:53.476 - [com.microsoft.java.debug.core.protocol.AbstractProtocolServer.processData] - [FINE] -
2017-12-18T13:38:53.48+0200 [APP/PROC/WEB/0]ERR [request]
2017-12-18T13:38:53.48+0200 [APP/PROC/WEB/0]ERR

Another comment - standard logs are being printed to the stderr instead of stdout even though they are not errors.