>>Might be the form is corrupted. You may try to remove and readd the editbox, or even recreate the whole form.
>
>That was what I finally did. I recreated the form and the problem disappeared. How exactly does a form get corrupted?

It happens sometimes. In some cases you might see some garbage characters in SCX (or VCX for classes) but I think in most cases it is just a mystery :)
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>Always appreciate your reponse. Thanks.

You are welcome.