Infinite scroll makes it impossible to stop selecting all posts

Continuing the discussion from Disable unlimited loading of the topic list:

When I “Select All” posts, the infinite scroll keeps selecting new posts that appear in the view.

This makes it impossible to stop selecting posts after reaching a certain point. The only way to stop selecting posts is to keep scrolling until the very end of the history!

My install is 5 years old though. Maybe this was fixed. If so, please close and disregard.