Hi @kaefert, @vchrizz and thank you for reporting 
My apologies for not getting to you earlier.
the good news is that I have just tested on v2.0.0.beta5 +120 and both Slick and Tiles seem to be working.
My guess is that subsequent commits to Discourse addressed the issue.
Are you still facing the same problem?
Even better news is that I tinkered a little bit with both Slick and Tiles and they now have much more targeted firing methods that will only fire when needed. Credit here goes to @vinothkannans for the awesome tip.
So if you’re using either Slick or Tiles or both, please update now and let me know if the problem is still there, or if there are any other issues that need to be addressed.