rw3dm | Rhino/OpenNURBS importer and exporter for NURBS-Python | Development Tools library

Using pickers at the top of columns in a grid of UICollectionViewCells to control contents of each column independently:

Each picker should update only the values of the cells in that column (only column 1 updated in image).

While the data updates, the label of the pickers become very confused!

1) When the user picks a new value at the top of column 1 or 4 - for example going from Masculine to Neutral.

1a) the data updates for the column - to Neutral - but the label on the used picker reverts to the previous value - Masculine.

1b) meanwhile, the label of the not selected picker (col. 1 or 4 - NOT 3) updates to the value selected in the selected picker (without changing the values in the not selected column)

In image, column 1 was updated from Masculine to Neutral (Das Kind is Neutral; den Ball is Masculine):

2) Column 3 is different when selecting a value.

2a) The data and picker label update correctly (no reversion to previous picker label value).

2b) If columns 1 and 4 have varying labels - eg col 1 Masculine, and col 4 Neutral they swap picker label values (no change to their data)!

I'm instantiating my pickers in a custom collection view cell from the collection view cell at item method. I'm using the indexPath.item to differentiate the cell and pickers (caseOfPickers) - that at least seems to control the data.