When I merge objects in illustrator, the shapes are actually changing
I'm working with another company's wordmark in a brand refresh. I'm adding a single-color drop shadow behind the wordmark. When I merge the two colors, I can see the shape of the objects changing (creating totally new points). I'm attaching a gif for reference—the black fill should not shift at all. I've been noticing this happening a lot lately and not sure how to fix this. Everything is vector, everything is outlined. This is a huge liability considering I'm working with someone else's IP.
iMac Retina 5K, 2020
3.1 GHz 6-Core Intel Core i5
32 GB 2667 MHz DDR4
AMD Radeon Pro 5300 4 GB
