Weird problem with dependent list fields

Within the admin area of CMS, I'm having a weird problem with dependent list fields in one of my sections (CMSB 2.14).

I have one field - called Chapter - which is a list field that get's its values from another table, the Chapter table. It is defined as advanced sql query list field with this sql:

SELECT num, CONCAT(name," - ",day," - ",location)
FROM `<?php echo $TABLE_PREFIX ?>chapters`

The next field is called Meeting and it's defined as an advanced sql query list that gets its list info from the Meeting table - within the meeting table, there is a chapter field, so the sql is defined as:

SELECT num, date
FROM `<?php echo $TABLE_PREFIX ?>meetings` WHERE chapter='<?php echo $ESCAPED_FILTER_VALUE ?>'

And the advanced filter is set to "chapter"

There is a third field, called Member which is also dependent on the chapter field and it is defined as an advanced sql table with the following sql:

SELECT num, CONCAT(MemberFirstName," ",MemberLastName," - ",MemberCompany) FROM `<?php echo $TABLE_PREFIX ?>members` WHERE MemberGroup='<?php echo $ESCAPED_FILTER_VALUE ?>'

with filter field set to chapter (the MemberGroup field in the members table actually contains the num value of one of the chapter records from the Chapters table.

Here's the weird part...if I have just meeting defined as advanced sql, and filter of chapter, it works fine. If I have just the member field defined as advanced sql and filter of chapter, it works fine, but when I have them both defined this way, the meeting field goes to "Loading..." upon changing the chapter and it stays this way and the member field first loads up the records that should be in Meeting, then subsequently loads up the member records. It's something you'd have to see real-time as it happens - it's pretty bizarre.

My guess is there's some small glitch with this capability.

I've attached one screen shot to show the end result