The feature walkthrough that floated into empty space

<p><em>Originally published at <a href="https://www.omerbinsaleem.com/hacks/feature-guide-floating-bubble/" rel="noopener noreferrer">omerbinsaleem.com</a> by Omer Bin Saleem (Omer Saleem).</em></p> <p>An in-app guide fired on mount, tried to anchor to an element inside a conditional section, found nothing, and drifted. The fix is one check per step: is the target in the DOM right now? If not, ski

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