- Enable mailing list mode (or “send me an email for every new post” on old versions)
- On the warning pop-up select “no”
- Notice that the checkbox does not get de-selected.
I just tested this on Meta and same happened.
Which exact browser / version are you using?
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_5) AppleWebKit/601.6.17 (KHTML, like Gecko) Version/9.1.1 Safari/601.6.17
Same happens in Chrome 50.0.2661.102
I can repro this. Added on my list.