The spaces between hashtags and urls are dropped, as well as parts of the url.
Using those post as an example: https://piefed.social/post/1662174
How it appears on piefed:
And on mastodon: https://mastodon.social/@gamingonlinux/115893551032761911
Edit: turns out fedia.io is mbin, not piefed.
deleted by creator
That is not going to do anything for people on mastodon who tag piefed/lemmy/mbin communities. If they are going to be displayed here, they need to be correctly displayed.