the export result of an r32_float image has error

[v8786339]

I export an r32_float image,but when i view it in renderdoc,the pixel value of it is not right,for example orginal value is 5127.0f,but when I see it in renderdoc,it shows 5134.0f,and when I import the image back to blender,It show 5120.0f

[matyalatte]

Thanks for the report.
Can you make a reproducible example? (Small texture size would be nice.)
I repeated export and import my hdr file as r32_float, but its pixel data did not change.