Guild Wars 2

I reached the final point of the Loreclaw Expanse Jumping puzzle and stood on the pressure place. However it didn’t trigger the false wall to explode. Is this a bug?
Picture attached.
Thank you.

I have the same issue and have found nothing about how to fix it, its really kittening annoying.

Logging off (character select) and in again helped for me. The chest is respawned -> open it -> kill mob -> stand on pressure plate -> exit through hole in wall