The fork did occur but many miners abandoned BCash coin right after it split from the main chain. The exit of the miners results to extremely delayed block creation due to the pre-calcuated difficulty and as a result no transactions with BCash can go through. Overall it fails as a currency, but does decently well on exchanges in spite of the inability to deposit.
I guess bcash still has some bugs or problems on their nodes or network, not so sure about it. So far, there have been 50 blocks mined since the hard fork and most miners are unknown. And there is MC Pool in Hong Kong
https://news.bitcoin.com/the-trading-center-in-hk-where-they-mined-most-of-the-bitcoin-cash-blocks/?utm_source=OneSignal%20Push&utm_medium=notification&utm_campaign=Push%20NotificationsBut, according to the most exchanges, people can't deposit or withdraw bcash as the wallet of bcc remain under maintenance.
Don't know how it happen or what the reasons but people only care about cash out this coin if-since the first time facing this problem of bch network.