Emulator

Game Name?
Dolphin UI

Game ID?
N/A

What's the problem? Describe what went wrong in few words.
When I open Dolphin, the only game in the list is Donkey Kong Country Returns. I have several dozen ISOs, including both Wii and GameCube games. When I remove DKCR from my ISO directory, it then says there are no games at all.

What did you expect to happen instead?
I expect to see all the ISOs I have listed as before.

What steps will reproduce the problem?

1. Set ISO directory to the proper directory.
2. Open Dolphin
3. Look at ROM list

Dolphin 3.5 and 3.5-367 are old versions of Dolphin that have
known issues and bugs, so don't report issues about them and test the
latest Dolphin version first.
Which versions of Dolphin did you test on?
I have narrowed the issue down to first occurring between 4.0-6502 and 4.0-6512, with the merge of pull request 1556. It persists up to and including 4.0-6632. There are no builds between these revisions available on the dolphin-emu.org downloads page. It's very strange, though, because that PR has almost nothing to do with the UI.

As a (kind of crappy) workaround, games can still be run through File -> Open.

Does using an older version of Dolphin solve your issue? If yes, which
versions of Dolphin used to work?
Yes, it works as expected in 4.0-6502.

What are your PC specifications? (including, but not limited to: Operating
System, CPU and GPU)
Not sure how it's relevant, but:
Intel Core i5 2400 @ 3.1GHz
NVidia GTX550Ti
Windows 7 Professional x64

Is there any other relevant information? (e.g. logs, screenshots,
configuration files)
Here is a screenshot of these two revisions of Dolphin running side-by-side. There is no change in configuration between the two, and they are both pointed to the same directory.
https://www.mediafire.com/?90quad14jpmpvrb