I feel like there's something fundamental I'm missing, or just misunderstanding about the puppet warp tool, but I can't figure it out. I've tried:
- Grouping the elements differently (lines grouped together, or nested). Although perhaps I am not grouping them "properly", as I know Illustrator can be picky about how things are grouped (Pathfinder, etc).
- Ungrouping all of the elements in the symbol, so there is only one group (the symbol container itself).
- Joining the paths (although, this creates a contiguous line, which adds more than the art should have).
- Doing the same thing to the polygon/line not as a symbol.
Normally I'm pretty good with Illustrator's tools, but the Puppet Warp has always perplexed me due to idiosyncrasies like this.