Good news!
Today I found a solution for empty text boxes and 80048821.
The main problem is the newest Wine (yet). On latest wine version (~5.0) always got that error message, but I downgraded to 4.0 and now I could log in to WLM.
So what to do?
Simply download wine 4.0 deb file/use downgrader software on Ubuntu and install it.
On Arch just simply run downgrade wine command and select 4.0’s number.
Why do I have empty text boxes in login screen?
Probably you forgot install winetricks packages. Run this command in terminal:
winetricks corefonts gdiplus msls31 msxml3 riched20 riched30 tahoma flash
If you have any problems yet, just go ahead and I’ll try help you.
@GrumpyCat