Bad rendering when exporting with nested elements

In Premiere 26, there seems to be a bug with the drop shadow.   I made graphic today, I used the new Object Mask tool (which works great by the way) to make a stat box pop out.  Moved it to the opacity section so I can have it get larger. It was white on white so I wanted to add a drop shadow.  When I do that, no shadow comes up even with opacity all the way up, distance, etc.  When you click to show shadow only, it’s there.   This is the top layer of 3 on a timeline.  I got advice from another editor to try nesting.   That worked, but when I exported the entire effect was off in the export.