Is it possible this is site-specific? The only issue I’ve had with Firefox on my MacBook was leaving pinned tabs open on pages that dynamically refreshed. Gmail, for example, would eat up memory over time. So I killed that pinned tab and I haven’t had issues since. I still have Discord pinned without issue.
On iPad…I dunno, Firefox on iPad is a hard sell without extension support so I haven’t used it much. I’ve been trying Orion lately, since it has a built-in ad blocker and is otherwise very similar to Safari in terms of performance and functionality.
I only run Linux on desktop so I’m not sure about battery life there. Is Firefox actually blocking sleep? I think Steam Deck runs a version of KDE, so perhaps you can use the kde-inhibit command to list and control blocks.
I honestly have no idea. I assume it’s some issue with background processing or something at an engine level. Nothing Chromium or webkit based seems to suffer the same issues, but perhaps it’s just an issue with my Firefox account or an extension that doesn’t behave properly with the browser. 😓
