How do I invert image (negative) inside a rectangle in InDesign?

isn't there an export problem with this kind of blending?

Yes, using an RGB Transparency Blend space can be problem with the PDF/X-4 preset which keeps transparency live, and defaults to using the CMYK export Output Intent as the blending space at least for the preview in AcrobatPro. So this:

Exported to the default PDF/X-4 previewed in AcrobatPro’s Output Preview simulates this as the output:

CMYK and RGB blending spaces produce significantly different color. I usually prefer the RGB blend space, so the work around for output to PDF/X-4 with an RGB blend space would be to intervene and flatten the page in Acrobat using the RGB blend space, which gives me the expected color: