The "frontendonly" flag is well and good for those who have upgraded to 0.18. I'm still on 0.17, and will be until 0.18 is marked stable or I run into bugs in 0.17 that bother me. Meanwhile, because this package move has been put in ahead of marking 0.18 stable, I have to go fix my world file after every sync on my frontend boxes. Reproducible: Always Steps to Reproduce:
You can't reverse a move that's already been put into the update file.
Plus, 0.18.1 is stable.