If a new character chooses Portal to Outland timeline from Chromie you get a quest to talk to the Honor Hold mage which will teleport you to Outland right in front of the Dark Portal. This works fine, however, if you use the portal to Stormwind at the Stair of Destiny and then go back to the Honor Hold mage to get back to Outland… he will send you to the Blasted Lands in the Warlords of Draenor timeline instead.
Even if you reset the timeline and repeat selecting Portal to Outland with Chromie, the Honor Hold mage will continue to send you to WoD Dark Portal, not TBC Dark Portal. The only way to get back to TBC timeline is to use the Shattrath portal… but if you left Hellfire Peninsula before even discovering Terokkar/Shattrath, this sucks pretty bad for a new player.
Please fix the Honor Hold mage so he is aware of what timeline you have set with Chromie and sends you to the correct Dark Portal.