Character "&" cause hangup for <TF>.
KB-20210510-01
Version
XFRX 19.2.68
Symptoms
XFRX hangup (neverending loop) at processing <TF> source.
Cause
CharacterĀ "&" withoutĀ consequential character ";"
Workaround
XFRX from version 19.2.68 has full support for HTML entities in <TF> source. Characters "<", ">", "&" are forbidden in html and must be written as html entity: < > &