I have an old C# winforms project I have support for several years now. In this project there is a main form that is an mdiparent and each other form is a child that fits inside the blank area of the parent. This has never been a problem.
Now I am trying to make modifications to this app again, but I do have a newer version of Visual Studio (2015) than I used to. So there is only ONE child form in this app that is giving me trouble. If I revert all my code, open the project, build, that form will appear/scale correctly. If I revert all my code, open the project, open the UI of the form, build, it will shrink the child to a smaller area inside the parent. It only happens on this ONE form, the rest work fine.
I have tried messing with all forms of autosizing, scaling, window size settings, etc but I think its something in VS that is causing just that one form to auto scale incorrectly and I'm not sure what it is. If I look at the auto generated code and compare it to the other forms it will set AutoScaleBaseSize to (6,15) but other forms are at (5,13). If I do like I mentioned above and revert the code but do NOT open the form, the autogenerated code for that form is (5,13) like the other forms.
What is happening in Visual Studio to change this AutoScaleBaseSize property and how can I find the culprit?