tab control jumps when you try to cycle subforms?

[misscrf]

I have an entry form which has a tab control. If print screens are
needed, please let me know and I will prepare them and post them.

Anyway, this tab control has 3 pages. When I am on one of the pages, it
has 2 subforms. Now I do have onexit code for the last field of the 2nd
form, which sets focus to the first field of the next form on the next
page.

Here is the thing. A user might be on the last subform on the last
page. Then they might click the page with the 2 subforms. The subforms
on this page are addresses and phones. They might want to add a phone
or address, and they might want to change which address is primary or
add another phone or something. When they click on the navigation
buttons ( on the Access navigation bar for that subform) the record
does cycle, but you wouldn't know. The page jumps and you end up on the
next page looking at the next subform.

Has anyone heard of this?

Can I stop it somehow?

I would think that it would be from the onexit code of the phone's
phone number field. That on exit, as I said, sets focus to the job
combo box of the application subform on the applications and activities
tab. The reason that I do not think this is the cause, is that the
cursor is not in that field when I click. It is either on the tab
itself or on another field all together. Likely it would be on the
contact info tab, since you have to click that to then choose to scroll
through one of the contact subforms.

I just don't understand why it is jumping to the application subform,
and I need to be able to tell users how to stop it. :-(
Please help.
Thanks.