My faction is currently completing a chain and over the last half hour the chain timer has gotten completely out of sync as reported by the API. This has been evident through the use of the chaining function on TornPDA (iPhone & iPad) and the YATA and Tornium discord bots as they are both now reporting that the chain is in cooldown however it has not dropped below 3 minutes.
This was a gradual process as it started resetting back to lower values when they should have been 5.00 and now is in cooldown. The Chain # has been updating the entire time, just a bit slow. To be clear the API is updating the chain hits and saying the chain is over at the same time.
As of 1730 TCT the API seems to be giving correct values again, it was also a gradual change back to normal
As of 2205 TCT is has began to do the same thing again