Quantum theory is certainly strange but to my mind relativity is stranger because how time and space change is harder for us to understand than quantum waves. Special relativity suggests there is a mystery behind the movement of ordinary matter.
QR5.2.1. Our Reality Bubble
QR5.2.2. Maintaining Normality
QR5.2.3. Maintaining Causality
QR5.2.4. Matter Has Its Own Time
QR5.2.5. The Universal Speed Limit