Howdy,
There appears to be a bug with the interaction between the mirrored tiling mode and the view image preview in Corona bitmap.
I am using 3dsmax 2022, and using the latest daily build, but pretty sure it's present in the latest full release too.
When you change tiling mode to mirrored and then click on the view image button it tiles the image in the image preview window. This does not happen in 3ds max bitmap, and shouldn't in Corona bitmap because functionally if you use the crop feature while in mirrored mode, it interprets the crop as if it isn't mirrored.