G'day ibm1620,

"I know that given is still experimental (and unpopular), but I thought it was still supported by 5.36."

The release notes, perl5360delta, whose first section is "use v5.36", has:

"... with this release, the experimental switch feature, present in every feature bundle since they were introduced in v5.10, has been removed from the v5.36 bundle. ..."

See "perlsyn: Switch Statements" for more about the switch feature.