ReactOS 0.4.15-x86-dev (Build 20220604-0.4.15-dev-4638-g79dbb73) (Commit 79dbb73b6f6fb083c28057133abf13cbad9f53eb)
MSN Messeger 7.5 renders incorrectly on the login page - preventing the credentials insertion.
From the debug log, there are stubs on riched20.
Putting the riched20.dll from a Windows 2k3 installation on the MSN Messenger installation folder or replacing the ReactOS's riched20.dll on system folder, restore the intended functionality of edit boxes and permits to input the credentials on the login page.
Attached screenshot and debug log.