"Controversial bitcoin scaling proposal Segwit2x's testnet forked yesterday, creating two different and incompatible testnets.

Nodes running older bitcoin software continued on as they normally would. But nodes running the new Segwit2x code stalled at block 27070, meaning mining pools running the new software were not mining blocks.

Overall, the nodes were stalled for over 20 hours as a result of the issue.

While there wasn't any real money on the line, the community was abuzz with the news, some dismissing the controversial scaling proposal for perceived lingering issues, while others defended the misstep as only a small stumbling block that wouldn't happen during a live deployment."