Hi,
With version 3.4.1 having selectionModel: { type: 'cell', mode: 'block'}, when clicking on each individual row without pressing the ctrl or shift key, only that particular row will be selected which is correct. If need to select more rows then use the ctrl or shift click together with the clicking.
But with 4.0.1, even without pressing the ctrl or shift key together with the clicking on multiple row, more than 1 rows are selected.
This should not be the case.
Hope this issue can be rectified fast.