I use Linux, so initially I assumed it was some weird Linux thing. Until it happened on my father's brand-new Win-11 notebook. This is embarrassing and disappointing. I'm old enough to have used the Mozilla Suite (now SeaMonkey) betas in 2001 and had no reservations recommending early stable versions to friends and family members over IE. Same with Firefox ten years ago. Now? If asked what I'd recommend, I'd honestly tell them idk.
Funny thing is I use Firefox beta and developer editions a lot in Mac and Linux devices and haven't had a problem yet with this bug... (Also my dad is a bit messy with computers sometimes, that didn't go in favor of his credibility)