A user experienced about experiencing this bug here: https://www.reddit.com/r/firefox/comments/f4eiy5/is_it_normal_that_my_browser_crashes/ in case you need someone to try to reproduce issues.
Bug 1531819 Comment 12 Edit History
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A user posted about experiencing this bug here: https://www.reddit.com/r/firefox/comments/f4eiy5/is_it_normal_that_my_browser_crashes/ in case you need someone to try to reproduce issues.