Suddenly InvalidateRow and InvalidateColum are not working anymore for my TStringGrid. I think happen about 7 days ago, but only today I realized that it is actually happens. I haven't installed any 3rd party controls in these 7 days. InvalidateGrid works. In some circumstances (it seems to be random) InvalidateRow and InvalidateColum seem to work - from time to time.
Any ideas?
Delphi 7, Win 7 32 bits