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Packet length exceeds MSS

I am capturing between a computer and a router using a Dualcomm Network Tap.

I have noticed some packets that have a length that exceed the MTU of 1492 set in the router.

I did the capture from the wire for the specific purpose of avoiding the issue of Large Segment Offload.

I do not understand how there can be packets between the NIC and the router that exceed the MTU.

The operating system I am running Wireshark on for the capture is Ubuntu 20.04 using a separate NIC.

In case the NIC was doing Large Receive Offload I tried

sudo ethtool --offload enp3s0 rx off

but it didn't help.