MATLAB save a wrong physical size of the pixel

[yuminguw]

When using "imwrite" to save an 8-bit image, the physical size of X and Y can not be set by the user. It was to set to a fixed value by the system (in Windows 10, the value was 352. 778) . This error can be reproduced in Bio-Formats MATLAB importer and exporter GUI by following steps:
(1) Choose "Each Plane MATLAB 8-bit" in the "Export" panel and then click "Save"

(2) Click the "Individual Image" to load the saved image in (1)

The Pixel size will be shown to be 352.778.