APEX True DBGrid problem.

We are using APEX True DBGrid control (ver 6)in VB5.
The user enters values in columns. In one of the columns, show a message box to enter proper value. But after clicking YES for the message, the respective column's value disappears. And though we have set focus to that column, it goes somewhere else.
(This happens in column 8)

After this if we go back to column 3 again, enter some value and press TAB to move to next columns, the value which we entered now is shown in columns where ever control goes.

Are there any known bugs with this control ?
Any related to setting focus ?


Harshad