Like discussed in this PR https://github.com/google/fonts/pull/2561, diffbrowser previews is testing fonts on an old version of Safari where there is still this HVAR issue that makes the spacing wiggling for glyphs made of components in variable fonts.
The bug is fixed in Catalina. Maybe we could update also the preview to a version of safari where variable fonts are displayed correctly ?
Like discussed in this PR https://github.com/google/fonts/pull/2561, diffbrowser previews is testing fonts on an old version of Safari where there is still this HVAR issue that makes the spacing wiggling for glyphs made of components in variable fonts.
The bug is fixed in Catalina. Maybe we could update also the preview to a version of safari where variable fonts are displayed correctly ?