Tile windows - sometimes I wonder how I ever lived without them! It's the only thing I really use WFx for.
Lately, I've noticed that some WB skins (mostly for WB5 beta, it seems) don't allow the middle-button to work for making a tile - I'd love if there were an override for this. But either way, I can still check the option for using Shift-Minimize, or even overriding a normal minimize button click.
However - on at least several skins (DogmaX4 and 5imple Alpha, for example), this causes problems. When the window becomes tiled, the left 2/3 of my desktop background and icons shift up about an inch, and the tile itself is a bit corrupted - right-clicking the desktop and selecting "Refresh" fixes it.
Furthermore, restoring the tile also shows a partially corrupted window - mainly the upper-left area, where the tile used to be on the desktop.
I have some screen shots demonstrating this (By the way, ever take a screen shot of a multiple-display setup? Funky... I cropped off the other desktops):
Before
After making a tile
After restoring the tile
It's been doing this for a while (again, not with ALL skins), and I've just been waiting for a fix, but maybe it's not a known problem?