Confirmed, will be fixed in the next build.
If you need the fix immediately, you can open scripts\AETemplates\AEEditGuidesShapeTemplate.mel from the Ornatrix root installation folder and change line 914 from
// No update required
to
button -e -c ( "OxDeleteSelectedStrands " + $attrName ) "deleteSelectedStrandsButton";
Ivan Kolev (Software Developer, EPHERE Inc.)
E-mail: ivan.kolev at ephere dot com
Discord: ikolev