Inconsistent animation in "Albums" vs "Artists" menu

I'm running entertainer 0.5.1 on Ubuntu Lucid, and have configured it to know where my music files are, and waited long enough for several albums to be scanned.

1. Start entertainer
2. Check defaults to "Music"
3. Press enter
4. Press left/right to switch from artists to albums
5. Notice albums is not bold on selection [bug]
6. Notice artists goes go bold on selection [good]
7. Select "Artists" and press down, notice that "Artists" text become unbold and "Albums" vanishes [good?]
8. Press up
9. Press right to select "Albums" and press down, notice that both the "Artists" and "Albums" vanishes [bug]

I'm referring to the two "titles" at the top of page - hopefully obvious.

Expected results:

At step 5, I would expect the "Albums" text to go bold when selected, just as the "Artists" text does in step 6.

At step 9, I would expect the "Albums" text to say on screen but not bold, and the "Artists" text to vanish, matching step 7.