JMeter uses 1.3 of htmlparser, not the latest version 1.6 ,which has modified many bugs and has strong NodeFilters. And, just replacing htmlparser.jar in distributed JMeter with latest htmlparser ...
jchardet: https://repology.org/project/jchardet/versions → fedora, suse... juniversalchardet: https://repology.org/project/juniversalchardet/versions → fedora ...