Upstream has released updates that appears to apply and compile correctly
Paper Changes:
c8542f23 Fix MC-99259 Wither Boss Bar doesn't update until invulnerability period is over (#4164)
Upstream has released updates that appears to apply and compile correctly
Paper Changes:
862b8c18 Updated Upstream (Bukkit/CraftBukkit)
100d51eb Do not obfuscate air (#4149)