a. Open Find File.
b. Bring any window to the foreground and cover up the right bottom region of the Find File window.
c. While Find File is in the background click on the dimmed More Choices button.
d. Find File move to the foreground with an odd incorrect display.
Update: Bobby Roe writes that a simple workaround for this is to use WindowShade to roll up the Find File window and roll it down again.
Note: Troubleshooting Mac OS 8 lists another Find File glitch.