[otrs] OTRS 2.2.6 : problem with Customer Companies listing

Hi, upgraded to OTRS 2.2.6 a few days ago and we are faced to a little problem : Under the Agent frontend, the Company link is not displaying anymore our companies from our external DB, when I click on the Company link/Icon, I'm only having nothing displayed, just the possibility to add a new company. Tried to get the same configuration (Config.pm / Defaults.pm / ZZZAuto.pm / ZZZAAuto.pm ...) with OTRS 2.2.5 and my companies are listed properly. Did not find any OTRS bugzilla entry that could match this problem for the moment. Does anyone is having the same behaviour please or know how to solve it (workaround or new 2.2.6 configuration maybe ? ) Thanks by advance. Best regards, Laurent