Oh! Maybe it behaves differently on windows, cause on mac it seems to remember fine without EditorPrefs? But using EditorPrefs makes sure that you won't lose a note anyway, so I'll be updating the package to have this right now! Thanks! :D
EDIT: OKAY found a big problem with this! EditorPrefs stay consistent across ALL projects so... I just accidentally lost a ton of notes. But it's cool, uploading a small update that saves with a unique key to each project. Whatever, those notes probably weren't important anyway... (THIS THING REALLY NEEDS AN UNDO BUTTON???) I think I'd like for this to save to a txt file, rather than EditorPrefs, if anything? Losing notes like that feels... bad. It'd also mean that notes can get saved w/ git pushes. If v0.3 is uploaded, I've added this