I’ve added bbPress support into Crayon since 1.11. Make sure you enable the setting “Display the Tag Editor in any TinyMCE instances on the frontend”, which is off by default from v1.15 to reduce the number of needed resources. This is needed to display the Tag Editor for any other frontend TinyMCE editors you may have (including but not limited to those in bbPress). I’d appreciate any bug testing (and fixing?!) from people who use bbPress, since I’ve made a lot of changes to the Tag Editor javascript in this beta hopefully everything works as smoothly.