NPC Bot unable to equip shield on v15 Blizzlike

[BeansonToast]

NPC Bot "Wilhelm" (Paladin) is unable to equip a shield in off hand when using one handed sword in main hand.

Same issue with Brisombre:

And Beldruk :

..and Brandur

Tried with various one handed swords in main hand, none would accept a shield in off hand slot - other paladins seem ok Katherine for example - no problem equiping one handed sword and shield:

Just began gearing mages, have the same issue with Elissa, currently equiped one handed wizardary blade in main hand, cannot equip off-hand item:

 

[BeansonToast]

...there have been other bots i havent bothered mentioning that have similar issues to the above, however today i started kitting out a druid.... this guy (Golhine) wont take ANY equipment.