Neotree regularly breaks for me, with Spacemacs - I can open the tree, but I cannot open buffers for files with <enter> or -, I cannot create new files etc . Sometimes I fix it by opening and closing Neotree a couple of times (SPC p t, SPC p t), but other times, nothing seems to fix it save for a complete restart of Emacs. Am I the only one who has experienced this?

@reefersleep don't use neotree... it's a source of sorrow. There are plenty alternatives. I myself moved to direx.

Another data point -- I've been using neotree for maybe 4 months, it's worked fine for me. The one exception: if I open a neotree window in another frame, SM gets confused when I try to close the 1st one.