Dear iAspecty,
Thank you for submitting this bug report. I apologize for the inconvenience of this issue that you’ve come across. This is a bug that has been going on for quite some time now. But regardless, we appreciate your efforts in trying to keep Bridger Land functional.
There is a way to fix this bug, simply once you select on a replay. Pause the replay at the very beginning where the Minecraft player is getting ready to bridge (emerald in your hotbar), and left click on the NPC. Once you’ve done this, you should be in a first person view of the NPC. Simply, press left shift as if you were to crouch and you will have the ability to fly again.
I apologize once again for this issue, this will be forwarded to the development team for further investigation.
Sincerely,
JoshIsChill