IBC packet size causes proof error

[ap0calypse644]

I have setup two chains with IBC capabilities. When I try to send a packet from one chain to another, it fails with the error:

ERR receive packet failed error="receive packet verification failed: couldn't verify counterparty packet commitment: failed packet commitment verification for client (07-tendermint-0): chained membership proof failed to verify membership of value: F40908EC60F24143D94FFEB23ED506CA3A1EDB721E1483787705A580E156BE8A in subroot 73B1F8E950952F6B4BF5E05AC99ADE91E510FBA0A61593E325BDE6DB7FCBEDBC at index 0. Please ensure the path and value are both correct.: invalid proof" channel-id=channel-0 module=server port-id=keyshare

After several tests I found that it's related to the size of the packet. A particular field in the packet has a string of about 150 characters. If I reduce the value to be around 120 characters, the packet transfer is successful. I have checked that the max tx size on both chains is much larger than the packet size.

Why does this issue occur and how to fix it. Thank you in advance.