Drop shadows move unexpectedly on rotated objects. It creates a visual glitch that can be seen toggling Overprint Preview On/Off.

Incorrect drop shadow can be seen in PNG export.
Correct drop shadow can be seen in PDF.

To recreate the bug:

1) Draw a shape or a create a text frame
2) Apply a drop shadow to the object (any setting, video is with Adobe default)
3) Rotate the object
4) Move the object around the live page until the drop shadow starts moving unexpectedly (offset varies).
5) Export to PNG.

InDesign 21.2
Sequoia 15.7.3
Macbook Pro M4 Max

This was not observed in version 20 of InDesign. This is a significant bug as it creates a working file that does not reflect exports.