Animated Gifs on Other Cards

[hh]

Yet another option.

One may use for the 'it-pauses-until-coming-back'-test a gif that
counts in seconds from 0 up to 100:

giphy.com/gifs/TCJTqRAxRbhGU   (repeatCount=-1)

Note. If you go to a different window (of LC or not), leaving the
running gif on the top card of its window, then the gif keeps going
on, whether hidden by another window or not.