Master slides Randomly Changing

I can appreciate how perhaps saving the program on a network drive could cause the overall .storyline file to become corrupt. To be fair, even this seems like a bit of a stretch. But when considering Articulate Storyline and the 100s of features and elements that can be contained within a project, why is it consistently the slide master changing random slides when saving? Theoretically, the font size, type, layout are all very interchangeable, the sequence of slides in a project etc. It is only ever the slide master updating and changing random slides in a project that is the problem and I am convinced it's a bug rather than choosing to save to a network drive.