Another of these, but one which I think shows the issue clearly and is easy to reproduce.
Take a look at the two images below - the display mode of the Save button should be disabled if there is no item selected in the combo, if something is selected, the button should be enabled.
Note that despite the exact same setup in the two images, the button in the first image is disabled and in the second it is enabled.
The only difference is that in the first image the Combo has recently been reset, but in the second, the Combo has had an entry selected and then removed.
In both case the formula bar is indicating the If condition returns true (although the labels beneath the button, which are based on the condition return true in the first case and false in the second).
In both cases, highlighting cboTechnician.SeletectedItems returns 'We didn't find any data' in the formula bar.
I suspect this is due to bugs in the way that either 'Nulls' or 'Errors' are returned for (in this case empty collections) but in some places are displayed as 'false'.
Whatever the cause it is very frustrating and resulting in much lost time trying to track down bugs in our Apps as a 'step-by-step' evaluation of each stage of a formula cannot be relied upon.
