I simply removed the tc-popup-keep references from the macro so that it looks like like the below snippet. Was this the right thing to do to make the scrollable popup a non-sticky popup?
\define PopoutMenu(Icon Name Tiddler Tooltip PopupClass: "tc-popup-menu-default" ButtonClass:"tc-btn-invisible") -- You received this message because you are subscribed to the Google Groups "TiddlyWiki" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/tiddlywiki. To view this discussion on the web visit https://groups.google.com/d/msgid/tiddlywiki/b0336151-14ab-4b1f-8624-bb090b9ea00d%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.

