I'd suggest to replace the panel from the MFG since you have a set of panels. When you install the new panel, make sure that all four edges are bedded well in sealer. The mfg can suggest a sealer but any well bodied sealer/caulk will work. I would use a urethane like Xcel, the Geocel products, or other. Don't buy the cheap stuff at the big box store.
In almost all cases where a tempered glass panel shatters is by impact on an edge. You can shatter them with high impact on the surface but there doesn't need to be much on the edges.