1748451 - Opening Slack and clearing Cache still keeps several files

Status: NEW

(Core :: Storage: Cache API, defect, P3)

Description

[Kagami [:saschanaz]]

1. Get a new profile
2. Access mozilla.slack.com and sign in
3. If the load completes, turn on DevTools, go Storage, and delete every cache tables (gantry-*)
4. Open a new tab
5. Close the Slack tab
6. Close Nightly

Expected: No files?
Actual: 13 files with total 3.61 MB size remain in (profile)/storage/default/https+++app.slack.com/cache/morgue. cache.sqlite only lists https://app.slack.com/service-worker.js which is probably acceptable, but it's 61 KB, which is way smaller than the total cache file size.

Edit: The size may be different, I retried and this time it was 15 MB total size of remaining cache.