The title says it all.  When players attempt to use a bed at a y-coordinate of 128 or above, they're damaged (and often die).  It's Minecraft bug #3599, and was resolved by Mojang.  Though my particular forge version is for Minecraft 1.7.10 (a version for which the bug seems never to have been present, according to https://bugs.mojang.com/browse/MC-3599), players on my server still experience this issue.  Any insight on how this issue might be resolved would be extremely appreciated.  (Note: normally I run cauldron, which the same version of Forge; even if I run regular forge w/out cauldron, I experience the issue).