May be irrelevant, and bit out of left field as a guess, but when did you last clean the sensors ?
Could there be small obstruction or something lightly coating 1 of the sensors on the right side that occludes it slightly, and could feasibly make...
It really varies from day to day and from software to software. Sometimes ICE is fine, sometimes not. Personally I found it amongst the least reliable of them.
A year later I would still posit that Hugin remains the only one that is error-free...
FFS. That's some weapons-grade governmental / bureaucratic arseholery going on there. There's another destination permanently off the 'visit list' for me then !