ConEmu 190301 would crash when startup environment uses "echo -x" command

[x-magic]

Versions

ConEmu build: 190301 x64 Preview channel
OS version: Windows 10 Ent LTSC x64 Version 10.0.17763.316
Used shell version : any shell

Problem description

So it is mentioned in this page and this page that ConEmu's internal echo command accepts -x to expand environment variables. But it seems in the latest version (as far as I can remember, in all 2019 builds) using echo with "-x" argument would render ConEmu unresponsive at startup, stuck at "waiting for console server...". This issue is not presented in 20180626 build.

Steps to reproduce

1. Confirm ConEmu startup correctly
2. Go to settings->startup->environment
3. Add something like echo -x "ConEmu version: %ConEmuBuild%" in startup environment variables
4. Save settings and close ConEmu
5. Restart ConEmu
6. ConEmu freezes

Actual results

ConEmu freezes at "waiting for console server..." in bottom status bar

Expected results

ConEmu start up normally

Additional files

[x-magic]

Hi, thank you for fixing the issue! I just updated to 190303 preview and no more freezing occurs.