This kind of issue with eneloops has been reported some months ago. Ex: DOUBLE 1 AND ½ "REVIEW": Sofirn SP10A and Sofirn SF14 *[added night / distance shots] - #12 by AgentSteel
Also, and this is a mere indication, the user manual (at least the one I have) comes with indications for 14500 batteries and AA alkalines (sometimes it is mentioned “AA battery - 1.2V or 1.5V (nominal voltage)” ). Ni-MH are not explicitly mentioned in the user manual specs.
This is what it is and doesn’t necessarily interfere with the discussion above!