WOW - this is absolutely strange behaviour .
Both files originated from the same file (I uploaded the same file to two different locations).
I downloaded both your files (jeff1 & jeff2) and viewed them on my local machine and both files appear different (one correct with yellow background and correct table the other white with improper table).
I then uploaded both jeff1 & jeff2 back into my moodle install, now BOTH are displaying incorrectly.
I uploaded both file to my other moodle install and both appear properly.
Can moodle be modifying my html??
The offending moodle install is in the root directory of the server... does/can this have an effect?
I really appreciate all your help.