I opened a pm this morning and found that the sizing of the message meant that next to the sender's av was completely blank and the actual message was aligned to the left under the bar of information about the sender. So in other words for a moment the message looked blank until I realized the coding had pushed it down to the next 'line' and then aligned it left from there.

Edit: I zoomed out to -67% in my browser and it aligned up with the original message.