Thank you for sharing your feedback regarding the Check In to TFS window. I agree that there could be improvements to this windows when you change its size.
I will need your confirmation that there is no sensitive company or project information in your initial message and I can convert it to a public feedback request and our engineering team will do everything possible to include it for the next release. Still I am sure you understand, that I can not make a certain commitment about it.
We always appreciate our customer feedback, so thank you for that.