Yes, I suggest filing a bug report. Others have reported issues with iFlyGPS not displaying TFRs properly in the past (I seem to recall a forest fire in the pacific northwest several years ago being a big topic of discussion), but I'm not aware that this issue has ever gotten much attention.
That said, AdventurePilot has indicated that they're focused on development of their new iFlyEFB product, so I don't know how much attention this is likely to get.
My philosophy: Submitting a bug report is no guarantee that something will get fixed. Not submitting a bug report is a guarantee that nothing will get fixed.