intersection-observer/edge-inclusive-intersection.html was added in https://codereview.chromium.org/1826323002 one month ago, and it appears to be causing flaky leaks on the WebKit Linux Leak bot:

https://build.chromium.org/p/chromium.webkit/builders/WebKit%20Linux%20Leak/builds/19050
Red, currently listed on https://sheriff-o-matic.appspot.com/chromium:
14:03:34.909 10063 worker/3 intersection-observer/edge-inclusive-intersection.html leaked
14:03:34.909 10063   Xlib:  extension "RANDR" missing on display ":9".
14:03:34.910 10063   Xlib:  extension "RANDR" missing on display ":9".
14:03:34.911 9999 [34498/40423] intersection-observer/edge-inclusive-intersection.html failed unexpectedly (leak detected: ({"numberOfLiveActiveDOMObjects":[2,3]}))
14:03:34.910 10063 worker/3 intersection-observer/edge-inclusive-intersection.html failed:
14:03:34.910 10063 worker/3  leak detected: ({"numberOfLiveActiveDOMObjects":[2,3]})


https://build.chromium.org/p/chromium.webkit/builders/WebKit%20Linux%20Leak/builds/18997
Green, but leak is in the stdio:
18:06:16.673 18663 worker/4 intersection-observer/edge-inclusive-intersection.html leaked
18:06:16.673 18663   Xlib:  extension "RANDR" missing on display ":9".
18:06:16.673 18663   Xlib:  extension "RANDR" missing on display ":9".
18:06:16.674 18597 [34464/40412] intersection-observer/edge-inclusive-intersection.html failed unexpectedly (leak detected: ({"numberOfLiveActiveDOMObjects":[2,3]}))
18:06:16.674 18663 worker/4 intersection-observer/edge-inclusive-intersection.html failed:
18:06:16.674 18663 worker/4  leak detected: ({"numberOfLiveActiveDOMObjects":[2,3]})

szager: Could you take a look?  Apologies that I don't know the right component to label this.