Albion extended their lead at the top of the lead, despite Matty Cash's last minute equaliser.
The Baggies were on top throughout but were enable to get all three points despite take the lead twice.
Callum Robinson's first goal for the club was not enough for Albion to go into the break ahead with Kyle Bartley scoring an own goal on the stroke of half time.
Forest then scored an own goal before Cash's last minute strike levelled the scores.
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