Dragon Soul - Dream Button

[implicatedone]

I have noticed in the Deathwing fight in Dragon Soul, the dream button does not pop for me when I have NUI up. Has anyone else noticed this issue?

Also, during Ultraxion when Hour of Twilight begins, I see the purple button for a brief second before it disappears. Thankfully, I have a healer with me usually so not entering here has not caused me too much grief.

Thanks in advance for any help.