@MennoWolff @nina_kali_nina
I have the solution if you're using a Chromium-based browser:

1: Navigate to `chrome://settings/content/siteData`
2: Set *Default Behavior* to `Delete data sites have saved to your device when you close all windows`
3: In *Customized Behaviors* -> *Allowed to save data on your device*, click on the “Add” button, and add every website you need, under this format:

If you don't know the cookies you need, `[*.]example.com`
If you know, `subdomain.example.com`.

@nina_kali_nina @thatonecoder What is *not* wrong with it?

Honestly, I find myself repeatedly feeling that things are not much better than during the browser wars, now we also have features only a few browsers implement, and sites that don't really care about being portable (egregious examples include github, where it's now harder to run the interface, and you can't get download links even with JS enabled, unless your browser supports whatever feature they demand;
(multipost 1/2)