SVG image generation in the Molecule to Image component (PP 2022)

After recently upgrading to PP 2022 from PP 2019, I found that the generated SVG chemistry image file header has changed from the following:
http://www.w3.org/2000/svg" width="256" height="256" >
To:
http://www.w3.org/2000/svg" width="100%" height="100%" viewBox="0 0 256 256">

Rendering directly from the browser has changed (it's much larger now) but I suspect this has little or no impact on rendering within consumer applications where they specify a display area. It does affect all of my regression tests, unfortunately.

Does anybody have any experience with this? Is there a way to revert to the old style header or do I need to just bite the bullet and update my regression tests?