The regexp "exclude" patterns do not work.

They work in the "pattern tester", but are still proxied / visible in the log...

EDIT:
Latest versions of Firefox and addon, i'm simply using the built-in templates for my Socks5 proxy, under "Quick Add" it creates for example:

^(http|ws)s?://10(\.\d+){3}/

It works but it is not very convenient to use. Adding URL to the proxy list is tedious.

When I enable "Enable Sync. Synchronise global exclude, proxies & patterns" the warning "Sync Error. Quota Exceeded Error: storage.sync API call exceeded its quota limitations" appears and the setting is disabled. Mozilla Firefox 127.0b4 (64-bit), Microsoft Windows 10.0.19045.4412.

very nicee

Hard to know how many stars to give....FP has worked for me for years, but this recent update screwed it. I re-added my proxies, and it seemed to be OK, but I found that randomly sites are not going out of a proxy even though I am only using this one proxy at a time, no patterns!
Deleted and reinstalled, set up again, seems to be OK so far.
Annoying.

Used to work perfectly, now works partially:
it works for web urls, but when I use ip addresses on the remote network that "should" also go through the proxy (ule to pass all through the proxy), they don't work.
in the previous version of this extension all works perfectly.

代理规则说明不太清晰，界面不太美观，不知道为什么代理启用的时候图标还会在启用和未启用之间闪烁

It works, but the UI is buggy and ugly. For example, after you add a pattern and click on "Add" to add another one, the previous pattern is erased - need to click Save and close the dialog before adding another one. This is annoying. Not to mention the interface looks bad on mobile (Android) and you have to zoom in to use it.

It works just fine. It’s just a shame that it doesn’t offer one stable proxy or two for free.

Not everyone wants a proxy for porn or to be an asshole/creep on the Internet. Some of us are escaping governmental censorship and don’t have the means to pay for a premium service.

It’d be nice if proxy services like this one, and protection services like antiviruses, remembered this. Not everyone who doesn’t pay for premium/donate is a cheap douchebag who doesn’t appreciate a service.