Using this plugin one can easily collapse/expand pages with children and grand children.
The WordPress Quick Edit functionality is a little buggy in my opinion. To make a long story short, this delay is so that WordPress can complete the edit(and any possible parent changes) before refreshing the expand/collapse status. I'd recommend not using Quick Edit to change parent/child pages at all. It often doesn't refresh any changed rows properly.
Requires: 3.0 or higher
Compatible up to: 4.4.5
Last Updated: 10 months ago
Active Installs: 4,000+
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