299876 2025-09-30 09:27:03 -0700 hue interpolation method not working in GTK / Epiphany 2025-09-30 15:28:12 -0700 1 1 1 Unclassified WebKit WebKitGTK Other PC Linux RESOLVED DUPLICATE 299875 https://www.software.hixie.ch/utilities/js/live-dom-viewer/?%3C!DOCTYPE%20html%3E%0A%3Cstyle%3E%0Adiv%20%7B%0Aborder%3A%20solid%206em%20transparent%3B%0Awidth%3A%204em%3B%0Aaspect-ratio%3A%201%3B%0Abackground%3A%0Alinear-gradient(in%20hsl%20longer%20hue%2C%20red%200%20100%25)%20border-area%3B%0A%7D%0A%3C%2Fstyle%3E%0A%3Cdiv%3E%26nbsp%3B%3C%2Fdiv%3E P2 Normal --- 1 bkardell webkit-unassigned bugs-noreply oldest_to_newest 2147176 0 bkardell 2025-09-30 09:27:03 -0700 As noticed by ana tudor, while the code below works in Safari (meaning it renders , it does not in GTK ``` <style> div { border: solid 6em transparent; width: 4em; aspect-ratio: 1; background: linear-gradient(in hsl longer hue, red 0 100%) border-area; } </style> <div>&nbsp;</div> ``` Several have verfied. You can run the test live via: https://www.software.hixie.ch/utilities/js/live-dom-viewer/?%3C!DOCTYPE%20html%3E%0A%3Cstyle%3E%0Adiv%20%7B%0Aborder%3A%20solid%206em%20transparent%3B%0Awidth%3A%204em%3B%0Aaspect-ratio%3A%201%3B%0Abackground%3A%0Alinear-gradient(in%20hsl%20longer%20hue%2C%20red%200%20100%25)%20border-area%3B%0A%7D%0A%3C%2Fstyle%3E%0A%3Cdiv%3E%26nbsp%3B%3C%2Fdiv%3E 2147316 1 ap 2025-09-30 15:28:12 -0700 *** This bug has been marked as a duplicate of bug 299875 ***