White Cucumbers

I had 2 MiniMunch cucumber plants and as usual in Quadgrows.
Therefore water level & nutrition kept constant.
Had significant crop (and still doing so)
However after the few run of mini green cucumbers, had large numbers of white (or very pale yellow cucumbers.

What causes this ... is it a fertilisation issue (though Mini Munch are all female)

Never had this before.

 

Bizzare! Any chance of a picture?

Could be some disease or a spontaneous mutation. There are white cucumbers like Itachi. Are the cucumbers the same size and shape as the old ones, do they taste okay?

 

They are same size, also had some half green half white.
So a bit like Itachi