Unity inconsistencys

During my time using unity3d i had quite some inconsistencys where unity3d works different between two executions, here two some noteable examples:

Sometimes when unity crashes parts of the Library get corrupted which ends up in materials looking very strange.

Some Buttons randomly stopped working until rebuilding the library

This Line:

Code (CSharp):

1. public static class go {
2.         static public UnityEngine.Object[] listing = UnityEngine.Resources.FindObjectsOfTypeAll(typeof(GameObject));

Works most of the time but sometimes throws a serialization error. Now in 5.4 the behaviour was changed and the blog said it would throw a warning or something.
However it still does work and also i would have to rewrite some 300-500+ lines if it would no longer work.

But then it also stopped working several times and throw an error.

There are other examples. I Use the LTS - version, however i think even that version is not really "stable" and there seems to be little to no corruption checks. Which is quite disappointing.