I'm trying to use the Safari-native "Save to Raindrop.io" extension as the Chrome version has sign in problems (as described in https://orionfeedback.org/d/9226-raindrop-extension-doesnt-stay-signed-in)
Plus the icon for the native extension is nicer.
However, the popup rendering is broken. This does not happen in Safari.

The window is rendered properly as in Safari:

Version 0.99.130.2-beta (WebKit 621.1.2.111.4)
Sequoia (15)