Hello,
First of all thanks for choosing our Theme, we are glad to be you in the WoodMart WordPress family :-)
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This is not a bug, this is the default behavior of the wishlist and behaves the same as in your case in our demo version.
Sorry but there is no option in Theme Settings to change that behavior.
It requires customizations and this is beyond our limitations and support policy.
If you like to enhance the functionality then you can use the plugin you mentioned.
Regard’s.
Xtemos Studio.