The problem is that they don't look the same on all operating systems, and some don't work at all in MS windows.
This is one of the reasons why I am now using wxpython phoenix.
So far, they seem consistent and very easy to use.
Though not as complete as Qt, I'm really impressed with this release.
wx formbuilder (https://github.com/wxFormBuilder/wxFormBuilder)
continues to evolve (last change 3 days ago), and may someday be as good as qt designer.
This is one of the reasons why I am now using wxpython phoenix.
So far, they seem consistent and very easy to use.
Though not as complete as Qt, I'm really impressed with this release.
wx formbuilder (https://github.com/wxFormBuilder/wxFormBuilder)
continues to evolve (last change 3 days ago), and may someday be as good as qt designer.