Plugin doesn't work if there are spaces in the file path. (say "/home/user1/My Projects/main.cpp")
The symbols list is empty. Debug output says:
ctags: Warning: cannot open source file "/home/user1/My" : No such file or directory
ctags: Warning: cannot open source file "Projects/main.cpp" : No such file or directory.
Class members (methods and variables) are not shown under their class's nodes. Instead, all functions (both global and class methods) are shown under "Functions", and all variables (global and class members) are shown under "Variables".