Just wanted to post an update that @JiiPee and I started the troubleshooting process over PM and the issue with tiles shifting / overlapping stopped occurring. Like taking your car to a mechanic as another community member put it! 
A few other people have experienced tiles shifting when saving (which may be a different issue), but we have not been able to consistently reproduce it on our side. If you’re experiencing any of these type of issues, please send a note to support@sharptools.io with relevant details about your configuration, editing device (OS, screen resolution, etc), and an ID of a dashboard ideally with a minimal reproducible example. 