Probably just an unfortunate timing. Cloudflare is going down in this region [1] at the same time with the protests and unrest caused by the news of a motorcycle taxi driver who got run over by a swat car during a protest [2].
Such coincidence might seems like the government trying to do some damage control by restricting internet access, but I hope that's not what happen here. At the moment, cloudflare status for Jakarta is still "rerouted".