Tab in text box inserts actual tab
 

Hi all, hope someone can advise on this, no joy from MSKB or Google.

I built a file in XL2K on XP (at) Home, to be used on a few machines with
XL2K &W2K. It has a userform for data input, inc. a combobox, about a dozen
text boxes, 4 option buttons and a cmd button.

Testing here was fine. Testing on one of the machines, occasionally at
random, pressing Tab or Enter in a text box would actually insert a tab in
the box, ie: move the cursor part-way along it. Although all TabKeyBehaviour
and MultiLine properties are set to False.

Does anyone know of any conditions under which this (?bug?) might occur?

TIA,
Andy