Ok, I see it happening on your site, but still can't reproduce locally but I believe I see why it's happening in the routing code. The problem is we've too many ways to reach groups via SEF. Reviewing the routing code to see if this can be quickly fixed otherwise it will have to wait. I am trying to improve our downloads section and install from web and can't afford to continue to have more interruptions or it's never going to get done.

Ok, believe I have this fixed now. The issue was it kept mixing up which ID to rely on. Either the one in the URL or the one in the menu item. It now prioritizes ID in the URL with fallback the ID in the menu. You're still going to have some strange SEF paths due to the Itemid parsing issue mentioned earlier that needs to be fixed in CB itself, but GJ now can at least figure out where you're trying to go properly.

I've installed a test build on your install. Please confirm it's working properly for you. I've already tested the few group URLs in your activity and they appear working fine, but you may have more URLs you wish to test to be extra cautious. Once you've confirmed is working fine will release a new build with the fix. If you are having issues still you can override the test build by simple reinstalling CB GroupJive.

Yes it seems to work fine like this. The strange paths are not a problem for now as long as people go to the right places.

Great, will make a new build with the fix in that case. Thank you for confirming.

By the way, could your fix have an impact on the problem that we just have regarding redirections of some links to the connection page ?

Nope, it can't touch URLs outside itself.