Despite what's listed in the patch notes, it's still an issue for me as well. It may not be a retroactive fix, which is most unfortunate. I recall someone mentioning that they thought it had something to do with a headline being published on the home page, which in all likelihood was causing the internet to crash and everything else to bug out.
Also, despite the fact that your GTA Online character/profile is supposedly separate from your save files, the bug actually appears to carry over. If I load the new save file I created, which there is no internet bug, subsequently there are no issues with my online character either. However, if I use the save file with the bugged internet, my online character also experiences the bug. Now in both cases, it's the same GTA online character, same stats, rank and everything else so how the hell does that work?