yes, sorry about that. The bug is confirmed since a while but I had no time to look into it and won't have for a while.
I accept PRs, just saying

Alright. Going to look into it.

@damko Do you have a short instruction on how to get this running locally in chrome? Just adding the src folder as an extension leads to:

Unrecognized manifest key 'applications'.

Update: Nevermind. It still works. Seems to be a warning.

you need to go in developer mode https://developer.chrome.com/extensions/getstarted

Debugged for some time. Copied the exact same request chrome sends and put that into a REST api client (Insomia). I don't get a 302 there. Also used apache_request_headers in the index.php on my nextcloud instance to output the headers - no difference either.

It works with Chromium and Chrome Canary (70).

People from the Passman webextension have similar issues:
nextcloud/passman-webextension#258

Will try some other things when I find more time.

In fact, if it works in FF it should also work in Chrome. It's a weird behavior. Anyway, thanks for the effort

@damko I've had the same issue in floccus, here's the fix: nextcloud/passman-webextension#270

Thanks @marcelklehr. Created a PR based on this.

thanks guys, very appreciated. I'm awfully swamped therefore I didn't yet have the chance to look into it. I'll do asap