Actually it is not that uncommon situation.
My guess you were filled in after 4pm auction.
Market makers reduce volume to 1 warrant after 4pm so there was nothing wrong from Commsec side. That’s why it is not recommended to have warrant sell/buy orders sitting in ASX after 4pm.
I also had a number of contingent orders triggered when a market maker does not provide any price or volume for a moment (might happen at any time).
