HTTP/3 access log

#1
The release log of Openlitespeed v1.8.3 shows:
[Improvement] Log HTTP/3 in access log

One of my websites has http/3 enabled, which is confirmed by the http/3 check on https://http3check.net/ : QUICK is supported and HTTP/3 is supported. But in the access log I've never seen an entry showing HTTP/3, only HTTP/2 (the majority) or HTTP/1.1. Can someone explain to me how HTTP/3 is logged in the access log?
 
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