For some reason when I do an onClick that triggers userSession.redirectToSignIn() the page shifts to the middle before redirecting to Blockstack. I thought this was a localized issue but looking at some other Blockstack I see the same thing happening. For example clicking “Start” on https://kit.st/ (animated screenshot below). Is there a way to fix this “page jump” form happening?
Which version of blockstack.js are you using? Try the latest beta release v19.2.0 https://www.npmjs.com/package/blockstack/v/19.2.0-beta.1
That solved it!
I was using v19.1.0 before.