Bug 258480

Description:
Desktop Safari+VoiceOver announces a <dl> as the proper length, but then announces a different length because it seems to consider both <dt> and <dd> as list items. The list count should be consistent.

Frequency:
Always

Steps to reproduce/Results:
1. Load the W3Schools example code from https://www.w3schools.com/tags/tryit.asp?filename=tryhtml_dd_test and focus on the results frame
2. Read through the content with read next (not read all)
3. Note that the list length changes when reading the list contents

VoiceOver Output results:
description list 2 items
Coffee 1 of 4
Black hot drink 2 of 4
Milk 3 of 4
White cold drink 4 of 4
end of description list

Hardware/software used:
Reproduced on 2 different MacBooks running 13.4.1

Additional notes:
none