How do you tag users in a post who are from different instances?

When creating a post, how do you tag users who are on different instances? For example, I'm creating a post on pixelfed.ca and I want to tag someone on pxlfd.ca. The tagging menu seems to only show users in the local instance. In the comments section, I have no problems mentioning users in other instances.

===Update - Apr 29, 2025===

I found a comment from dansup in issue 5885 on the Pixelfed GitHub. The inability to tag users on other instances is by design.

14 points · 3 comments · view on lemmy.world

3 Comments

stoy@lemmy.zip · 3 pts · 1y (1 reply)

Can't you just type @user@instance

So if I want to tag my pixelfed account here, I would type:

@stoy@metapixl.com

stormio@lemmy.ca · 2 pts · 1y

Nope, it doesn't work. I can manually type your username into the search box, but nothing appears. To be clear, I'm talking about tagging someone in a picture, not a comment. If it makes a difference, I'm using the Pixelfed website, not an app.

stormio@lemmy.ca · 1 pts · 1y

I found a comment from dansup in issue 5885 on the Pixelfed GitHub. The inability to tag users on other instances is by design.

I edited my post to include this info.