Hi Kai,
1) I have tested this issue in v3.3. I was not able to reproduce the problem. If possible, could you please send me a sample and a screenshot demonstrating this issue. Also, let me know the controls you are using inside child MDI.
2) I have tested for this issue in v3.3 and was not able to see the problem.I have attached the sample used for testing.Please modify the sample to show the problem and send it back to us so that we could investigate it here.
We appreciate your cooperation.
Regards,
Ebenezer.P
XpToolbar_6761.zip