I'm using pycharm to work with Julia and use the corresponding Plugin. My problem is, that TODO and "</editor-fold>" is not working. I reported this to the plugin developers, but they could not reproduce the program (https://github.com/ice1000/julia-intellij/issues/339) ) So, it does not seem to be a problem with the plugin itself.
In fact, and here it gets strange, when I reinstall PyCharm, install the Julia plugin and restart PyCharm to activiate the plugin, everything works just as desired. It's only until the next start of the problem, that the problem appears.