CMake variable table defaults Key column to minimum width

When launching Qt Creator, the table of CMake variables under the Projects -> Build section defaults the Key column to minimum width.

This table overall has very strange behavior:

• Upon first launching Qt Creator and loading a project, the Key column width is the minimum and can be resized.
• When selecting File -> Close All Projects and Editors, then re-opening the same project, the Key and Value columns each take up 50% of the table width and cannot be resized.
• When selecting File -> Close All Projects and Editors for a second time and re-opening the same project, the Key and Value columns each take up 50% of the table width and can be resized.

When closing Qt Creator, this behavior resets, even if you manually resized the Key column. The sequence of behavior remains the same:

1. First project loaded has the Key column at minimum width.
2. Second project loaded has Key and Value columns at 50% each, but not resizeable.
3. Third and following projects loaded has the Key and Value columns at 50% each and may be resized.

I am running Qt Creator 7.0.0 on Arch Linux with KDE.