Not so much a bug as a possible improvement...
Monk AC is calculated by 10 + Dex bonus + Wis bonus
Sheet (Beta 5 anyway) shows the perfectly correct AC (17 for me), and lists 0 armour, 0 shield, +4 dex and +1 other (for my magic item), but does not explain the missing (Wis) bonus.
Any possibility of changing the Dex block to read: Dex/Wis (2 lines) and the bonus show as +dex/+wis ??
Thanks
For a Monk the Wisdom modifier is included in the base AC (10+Wis Mod). For a Barbarian the Constitution modifier is used instead (10+Con Mod). Adding either the wis or con mods to the dex block would made no sense.
With 5th edition, AC is determined by a set Base AC and modified from there. Only one version of the Base AC can be used, and if your character has multiple methods available you must choose one to use.
Standard Base AC (10) + Dex Mod + Armor + Shield
Monk Base AC (10+Wis mod) + Dex Mod - if any armor and/or shield is used, use the Standard Base AC method instead
Barbarian Base AC (10+Con mod) + Dex Mod + Shield - if any armor is used, use the Standard Base AC method instead
Mage Armor Base AC (13) + Dex Mod - if any armor and/or shield is used, use the Standard Base AC method
Natural Base AC (Dragonic Resilience) (13) + Dex mod - if any armor and/or shield is used, use the Standard Base AC method instead
If you have a Fighting Style that affects your AC, that is a modifier to your Base AC (if you meet the requirements). For instance, the Defense Fighting Style does not work with the Monk or Barbarian method because it requires armor to be worn (which both of those methods excludes).
If you have a multi-class Barbarian / Monk character, you must choose which one Base AC to use.