Chrome extensions are updated in the background (every 5 hours, based on the code here).
Every few hours, the browser checks whether any installed extensions or apps have an update URL. For each one, it makes a request to that URL looking for an update manifest XML file.
Keeping things in sync is important.
It might be possible that your browser extensions are outdated, even though a new version of the Spirit extension is available. Once Spirit Studio or the Web Player is outdated, this might lead to unexpected behaviour.
chrome://extensions and tick the Developer mode checkbox at the top right, then press the Update Extensions Now button.