Profiles > Manage skills & tools goes to /skills?profile=X. The path and the param change in the same navigation, so the effect that adopts the URL param and the effect that writes state back to the URL both ran with the old state. The write-back won, and the page stayed on the old profile with the URL rewritten to match it.
A changed ?profile= is now adopted during render, before effects run, so the URL sync effect only ever sees the new state.
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