[Reg 5.12.0 -> 5.12.6]QMenu does not allocate space for indicator in submenu item when stylesheet is used

When using stylesheet to style the QMenu and a checkbox indicator it does not allocate space for indicator in the submenu item.

Steps to reproduce:

1. Run the attached example project

Expected result:

1. The menu item in the menu and submenu looks the same.

Actual result:

1. The item in submenu does not allocate space for the indicator and thus the text and the indicator are overlapping each other.