not really, you can just leave a leaky or script-laden page open for awhile to see the same behavior, depending on how things are put together.

example: blue iris is a cctv package that has a webui module. That web-ui client-side browser tab will inflate to system-memory size if allowed within a few days.

Not much of a point other than there are other (probably pretty esoteric) things that one can do to a browser that'll make them fall apart even on modern hardware.