Oh that’s embarrassing. I logged this internally with respect to Pinboard [it would affect the other services too] but didn’t set the issue’s target milestone correctly so I forgot about it and we overlooked it in 3.2. Sorry this caused trouble. It will be fixed in 3.3. Thank you for letting us know.
Update 2021-08-06 11:14: this is same as Cannot automatically send link to Pinboard with keyboard shortcut - #9 by LucB. As noted, I had set the milestone wrong for it.