Every time a change to a C++ class is made, the corresponding Blueprint that inherits from it doesn't receive the changes via hot reload and the Editor has to be restarted.
User is suing the build command: /Engine/Build/BatchFiles/Linux/Build.sh Editor Linux Development -waitmutex -progress
Result: Changes are not reflected in blueprint and the corresponding hot-reload message doesn't occur
Expected: Changes would be reflected in the BP immediately
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-58188 in the post.