ServiceWorker thinks I'm offline when I'm not

[lw1 (Lukas Winkler)]

Answer from the user

@fdellwing

Using FF58 on Ubuntu 14, it’s the current stable version. Will try it tomorrow in safe mode (no addons and default config).

@fdellwing

Ok, I was able to pin it down to Adblock Plus.

The interesting part here is, it does not matter if you have it enabled on matomo.org, which I haven’t. It only matters if the addon at all is enabled in about:addons . I’m quite sure this is a bug, but I’m not able to tell if the bug is in the addon or in the forum software, but I have not got this problem anywhere else.

(from https://github.com/matomo-org/matomo/issues/12588#issuecomment-369400096)