That's not an "issue", that's intended:
Code:
; Deplenishment of Hellenistic professionals for the Ptolemaioi player
if not I_IsFactionAIControlled f_ptolemaioi
inc_recruit_pool region_178 -1 hellenistic cavalry hetairoi ; Alexandreia
inc_recruit_pool region_178 -1 hellenistic cavalry kleruchoi agema
inc_recruit_pool region_178 -1 hellenistic cavalry xystophoroi
inc_recruit_pool region_178 -1 hellenistic cavalry hippeis
inc_recruit_pool region_178 -1 hellenistic infantry hypaspistai
inc_recruit_pool region_178 -1 hellenistic infantry makedones peltastai
inc_recruit_pool region_178 -1 hellenistic infantry agema phalangitai
inc_recruit_pool region_178 -1 hellenistic infantry phalangitai
inc_recruit_pool region_178 -2 hellenistic infantry hoplitai
inc_recruit_pool region_179 -1 hellenistic cavalry xystophoroi ; Memphis
inc_recruit_pool region_179 -1 hellenistic cavalry hippeis
inc_recruit_pool region_179 -1 hellenistic infantry phalangitai
inc_recruit_pool region_179 -1 hellenistic infantry hoplitai
inc_recruit_pool region_179 -1 thracian infantry katoikoi
inc_recruit_pool region_117 -1 hellenistic cavalry xystophoroi ; Salamis
inc_recruit_pool region_117 -1 hellenistic infantry hoplitai
inc_recruit_pool region_117 -1 hellenistic infantry hemithorakitai
inc_recruit_pool region_098 -1 hellenistic cavalry lydian lancers ; Ephesos
inc_recruit_pool region_098 -1 hellenistic infantry peltastai logades
inc_recruit_pool region_098 -1 hellenistic infantry hoplitai
inc_recruit_pool region_100 -1 hellenistic infantry hoplitai ; Halikarnassos
inc_recruit_pool region_100 -1 hellenistic infantry hemithorakitai
end_if
The Ptolemaic professional recruitment pools start off depleted to represent their exhaustion. You need to hire mercs in the interim.