Thank you for your consideration, prikryl.
One thing I did notice in further testing is that that actual, active clickable area for the "Do not show this dialog next time" checkbox will often extend the entire width of the bottom of dialog box, depending on neighboring cells/objects in that dialog box. In some instances, a simple miss-click of the OK or Cancel buttons will result in the hide option being triggered.
Even just in the interests of UI best practices, if that active clickable area was restricted only to the checkbox itself, or the checkbox and the displayed label text only, that would be much more welcome for us cautious types.
Best regards and thanks again.