Tizen Shared Object Libraries won't be loaded

I've been developing an app for Tizen for a while. I'm using Unity 5.3.5p3, and Tizen 2.4.0rev6.

And now that I've almost finished, strange bugs appear.

I've made a Shared Object (.so) library, successfully connected it to Unity, successfully installed my app on the device, and everything works.

Everything works until I switch off "Development Build" in Unity build settings. Then, it seems like it can load the library (it gives me no error about missing functions or whatever), but the functions inside my library don't get executed at all, not even half a log.

What's going on here?

(I can publish some code if you want to, but I don't think it would be of any help, since it all works out fine on development build)