Summary of the problem F7 qnd F9 overlays don't work Pack Version 1.2.0 What is the bug? Really 1.2.1. Worked as expected in 1.1.4 and 1.2.0 but after updating my server and player to 1.2.1 this morning F7 no longer shows lighting levels and F9 doesn't show chunk boundaries. I no longer use F7 as I prefer the F4 numbering display. But I use F9 a lot when designing my bases. If it matters, my server and client player are on running on the same computer. And I have no performance issues with this configuration. I pretty much play single player with a local server. Mod & Version I don't know what mod processes these two overlays. Link to log file Is it repeatable? Yes. Known Fix None.