No delete option in the vector shpe gradient editor
Not sure it's a bug, but there seems to be no way of deleting a stop in the vector shape gradient editor.
(see screenshot)

It’s also the same in the property panel

The available actions are: click to highlight the stop or double click to open the colour picker, but the DEL key doesn’t delete the stop after being highlighted, and there’s nothing showing when right clicking on the stop.
In fact, there’s no extra settings for position and delete like there is in the standard gradient editor. It lacks consistency

I resorted to create my gradient in the standard gradient editor, save it so I can use it in the fill and stroke settings.

Photoshop version 27.8.0 on Windows 11

