TFTP: some packets are not recognized as TFTP packets with 3.6.5

Summary

With Wirehark 3.6.5, I have problems with TFTP packets, some are not recognized as TFTP anymore.

Steps to reproduce

Consider the attached PCAP: the first packet is an "option acknowledgement" (RFC 2347, I guess), the second an error. Older Wireshark versions detect both packets as TFTP (though it marks the second one as malformed - after a quick glance at the standard, I think the 0-byte at the end is missing), Wireshark 3.6.5 just considers it as plain UDP.

What is the current bug behavior?

The packets are reported as UDP.

What is the expected correct behavior?

The packets are detected as TFTP.

Sample capture file

tftp_parsing_error_stripped.pcapng

Relevant logs and/or screenshots

n/a

Build information

tshark -v
TShark (Wireshark) 3.6.5 (v3.6.5-0-g21f79ddbefbd)