Sorting doesnt work while columns are hidden

[ni_avoss]

hey all,

i am experincing a problem and i dont have any clue how to solve it.

i got a straight table in which are 3 columns only shown when a condition is fullfilled.

well, if the columns are hidden, i can sort the columns right after the hidden ones exactly one time but not twice...

as soon as all columns a visible, sorting works fine.

has anyone and idea?

thanks in advance

[ni_avoss]

maybe now?