This series of edits removing several descriptions (which were incorrect) took several seconds to execute, most of which was visible in table. As in, I could visibly see the Javascript remove each description and revert to the "please insert description here" terminology over a several-second timeframe.
May be related to the desire in T75319: Batch multiple entity-changes in one request, or may be due to the Javascript loading of the "load more languages" related table, or some other reason.