Golden gnome glitched

I’ve ran into the same problem, can’t seem to figure out what went wrong to make this happen especially when you can clearly see some thing is wrong in these photos attached, making it impossible for me to collect this last chest and get my trophies if you or anyone has found a solution to this it would be much appreciated 

Product: Plants vs. Zombies: Battle for Neighborville
Platform:Sony Playstation 4
Please specify your platform model. Sony PlayStation 4
Please provide your Xbox gamertag or PSN ID. (Optional) PureBasics101
In what game mode did the bug occur? PvE Regions (Town Center, Weirding Woods, etc)
Summarize your bug Cannot collect golden gnome in mount steep due to glitch
Steps: How can we find the bug ourselves? I was playing regions getting help from people to complete a missions and I’ve collected a golden gnome and a gnome chest now the wrong chest in the gnome chamber is open and the other is locked I’ve collected all the Gomes but one is still frozen
Which character were you playing when the bug occurred? Peashooter
What upgrades had you equipped with this character? Fearless, leveling up, pro spitter, ready up
How often does the bug occur? Every time (100%)

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Currently am wary to uninstall game out of fear to lose my current in game progress/comtumes would be a shame, however I am unable to complete mount steep because of this I cannot collect the chest complete the gnome challenges or collect the gnomes since I’ve played in a party in regions any help as to what to do or how to fix this bug would be appreciated