Hi Shirish,
Thank you for your interest in Syncfusion Products.
I am afraid I could not reproduce the issue.
Please refer the sample in the below link in which the size of the docked controls in Child forms remain unchanged when it is switched from one view to another.
http://websamples.syncfusion.com/samples/Tools.Windows/F71943/main.htmIf I have misunderstood your requirement, could you please explain me in detail, so that I can work in depth and try to send a better solution?
Regards,
Anupama