When you change an "Attribute name" in "Object Definition: Attributes" the attribute view labels are changed inconsistently for "view - List Column Fields" and "view - List Filter Fields".
Consequently, the list under "Available columns" in "List Column Section- layout" shows a different set of values than the list under "Available" in "List Filter Section - layout".
Steps to Recreate:
Expected Result: "Column Label" in Views - Project List should be the same as "Filter Label" in Views - Project Filter.
Actual Result: "Column Label" in Views - Project List is different than "Filter Label" in Views - Project Filter.
Open the Project Object and click on Views - Project Filter- [Fields]. Manually change the name of the attribute for any attributes whose name was changed as in step 2.