According to Nikita Zhavoronkov of blockchain explorer Blockchair, Bitcoin SV ($BSV) has experienced a six block or more reorganization due to miner confusion or fighting. Blocks 578640-5 were orphaned, perhaps due to the size of the blocks with number 578644 coming in at 128 mb which is known to cause reorgs or orphaned blocks. The network was down for 1.5 hours during the reorg.