It seems that the same issue as described above can encounter with text fragments. STR: - Enable `dom.text_fragments.enabled` - Go to https://en.wikipedia.org/wiki/Nuclear_power#:~:text=up-,Most,reactors - Go to view-source - Loading the view-source page can take minutes As a matter of fact, it seems that the expensive reflow can even be triggered on the page itself, I have not found out how. But it seems that going to another tab and then back triggers this?
Bug 1867249 Comment 7 Edit History
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It seems that the same issue as described above can encounter with text fragments. STR: - Enable `dom.text_fragments.enabled` - Go to https://en.wikipedia.org/wiki/Nuclear_power#:~:text=up-,Most,reactors - Go to view-source - Loading the view-source page can take minutes ~~As a matter of fact, it seems that the expensive reflow can even be triggered on the page itself, I have not found out how. But it seems that going to another tab and then back triggers this?~~ The page itself freezes while the reflow freezes the view-source tab.