At the current state is very difficult to work with Versions when there are conflicts to solve.
I work with my team on a project in which there are few Sketch Files used as shared libraries and a final Sketch file with the key screens.
Everytime that we merge files or pull from the master, Versions is showing thousands of conflicts. If we try to go one by one it takes hours and 95% of the conflicts are meaningless.
Going one by one is impossible: after opening the preview of 15-20 conflicts, the app becomes slower and slower and slower until it crashes and you lose all the work you've done.
(e.g. If we work on two different topics, that means working on totally different pages inside the same Sketch files, we get 4000+ conflicts).
Furthermore: in the left tabbar is not showed what choice you already made on conflicts that you decided how to solve.