"No shady privacy policies or back doors for advertisers" proclaims the Firefox homepage, but that's no longer true in Firefox 128.
Less than a month after acquiring the AdTech company Anonym, Mozilla has added special software co-authored by Meta and built for the advertising industry directly to the latest release
I had that problem when Lemmy was under constant DDoS attacks, almost a year ago.
You have both upvotes and downvotes so I will assume you are not the only one with these problems. In my experience Reddit website either glitches itself or glitches Safari every now and then.
Sounds like iOS issue, not Lemmy.