Freeing up space · One-tap clean-up (Run Tuhi)
Why does Run Tuhi list reclaimed local backups separately from the space it freed?
Short answer: Local backups sit in space your Mac already counts as available, so clearing them doesn't raise the free-space figure. Storage Studio reports it on its own line instead of inflating what it freed.
Because that space was already counted as available by your Mac. Local backups (snapshots) sit in space macOS treats as purgeable — it will give it up whenever something needs room — so clearing them is real tidying, but it doesn't raise the free-space figure Finder and the chart show.
Rather than inflate the result, Storage Studio reports it on its own line, worded as reclaimable local backups it also tidied. The "freed" figure stays honest: only space that genuinely came back on your disk.
To see how much your Mac is holding in local snapshots right now, open the Local Snapshots manager.