I have recently installed IntelliJ IDEA 13.1.4 and the jRebel plugin. I have licensed it ok and created and added configurations in catalina.bat file.
catalina.bat
When
For me this was the problem: My test folder was ./test/src/com/.... I had marked test as test folder, but test/src was the right one.
./test/src/com/...
test
test/src
The "false" setting worked for me with Jintellij 2017.1.3, but not in 2018.02.