So, I tried something out on my thing. I don't know if it's something I did, or it's just the Chrome Dev Editor, but one thing's for sure: something's broken.
I'll try to switch to a more reliable source to edit, or even edit HTML and JS files right out of the box with a text editor. If that doesn't work, I'll have no other choice but to abandon my project, at least for a while. I might come back to it should that happen.