Code projects in 4.18 cannot be opened in DebugGame from the commandline.
Yes. This worked successfully in 4.17.2.
The attached log is from 4.19. The log for 4.18 was similar.
The project fails to build successfully. The log file (attached) indicates that a number of module files from various Engine plugins are incompatible or missing.
The project builds successfully and opens in DebugGame.
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-51347 in the post.