Reproduction:

With Corsair

1. activate Combat stance

2. Switch to Awakening Weapon

3. Wait for idle  animation to play (Spins and inspects Patrica)

4. Press [TAB] to go to non-combat mode...

... nothing happens

5. Move character to cancel idle animation

6. Press [TAB] again...

... non-combat stance activated

Expected:

Idle animation should not block [TAB] switch between Combat/non-Combat Stance