Keyboard shortcut for restoring windows

Using Windows shortcuts to restore window size works fine unless, for example:

Meta+Left. Window tiles to the left, as expected.
Then Meta+Up. Window maximizes, as expected.
Then Meta+Down. Window does not restore to original, non-tiled position.

Sometimes this will work, but sometimes not. The behavior doesn't seem to be consistent.

Wasn't sure if this was an actual "Bug," so I posted it here first.